English can say “we stayed and talked.” It has no noun for that stretch of time. Portuguese has the same form and, in current use, means a course of the meal.
Spanish noun, defined by the Real Academia as the time one stays at the table after eating. Literally sobre, upon or after, plus mesa, table. The old Spanish sense “dessert” is marked unused. In current Portuguese, sobremesa usually means the dessert course.
Where the line breaks
Alignment of sobremesa into 5 lanes. Arrives, thins, and breaks are written in each cell. The same information is in the text alternative below.
ESParts
sobreUpon, after
mesaTable
the nounA named interval
ESSourcesobremesa
sobreSource
mesaSource
the nounSource
ENEnglishGloss for this platestaying on at the table
staying onThinsLexical gap
at the tableArrives
—BreaksLexical gap
Gloss for this plate. A gloss. “After-dinner conversation” is the usual longer substitute, and it misplaces the meal: the sobremesa is often after lunch.
PTPortugueseParallel expressionsobremesa
sobreThinsConnotation
mesaThinsConnotation
dessertBreaksConnotation
Parallel expression. The same form, in current Portuguese, usually means dessert. A false friend, not a cousin that drifted a little.
FRFrenchGloss for this platele temps passé à table après le repas
aprèsArrives
à tableArrives
—BreaksLexical gap
Gloss for this plate. A gloss. French has no established noun for this interval.
DEGermanGloss for this platedas Sitzenbleiben nach dem Essen
nachArrives
—ThinsLexical gap
—BreaksLexical gap
Gloss for this plate. A gloss.
JAJapaneseGloss for this plate食後も席を立たない時間
食後Arrives
席ThinsLexical gap
時間BreaksLexical gap
Gloss for this plate. A gloss: the time you do not leave your seat after the meal.
Text alternative
English “staying on at the table” (gloss for this plate): breaks: lexical gap. Portuguese “sobremesa” (parallel expression): breaks: connotation. French “le temps passé à table après le repas” (gloss for this plate): breaks: lexical gap. German “das Sitzenbleiben nach dem Essen” (gloss for this plate): breaks: lexical gap. Japanese “食後も席を立たない時間” (gloss for this plate): breaks: lexical gap.
sobreUpon, after
A prefix-like preposition: on top of, and by extension after. The time sits on the far side of the meal.
What happens to “sobre” in each lane
Lane
Form
Status
Break
What happens
English
staying on
Thins
Lexical gap
The aftermath is described, not prefixed.
Portuguese
sobre
Thins
Connotation
The form is identical. The parse goes to the course served at the table.
French
après
Arrives
—
The aftermath is said.
German
nach
Arrives
—
After, said in the open.
Japanese
食後
Arrives
—
After the meal.
mesaTable
The table you do not leave. The word names a stretch of time by the furniture.
What happens to “mesa” in each lane
Lane
Form
Status
Break
What happens
English
at the table
Arrives
—
The furniture arrives.
Portuguese
mesa
Thins
Connotation
The table is still in the word, now as the place a course is set.
French
à table
Arrives
—
The table arrives.
German
—
Thins
Lexical gap
The gloss can forget the table and keep only the sitting. The Spanish word cannot.
Japanese
席
Thins
Lexical gap
A seat, not specifically the table as the Spanish word’s root.
the nounA named interval
Not the conversation only, and not the dessert. The interval in which people remain seated after eating. It can be a short one. It is still a thing with a name.
What happens to “the noun” in each lane
Lane
Form
Status
Break
What happens
English
—
Breaks
Lexical gap
No established English noun for the interval. A phrase describes it each time.
Portuguese
dessert
Breaks
Connotation
A Portuguese reader who has not been taught the Spanish sense will hear a course, not an interval of talk.
French
—
Breaks
Lexical gap
A noun phrase you build, not a headword you already have.
German
—
Breaks
Lexical gap
No established noun.
Japanese
時間
Breaks
Lexical gap
An interval you describe. Not one conventional noun.
The joint
The Real Academia’s definition is plain: the time one stays at the table after having eaten. Sobre plus mesa. It is not the talk considered as a genre, though talk is what people do in it, and it is not the dessert. An older Spanish sense, “dessert,” is recorded and marked unused. That old sense is why the Portuguese collision is intelligible, and why it is still a collision.
Current Portuguese sobremesa is the dessert course. A Portuguese reader who meets the Spanish word in a novel of long lunches, and is not warned, will think the sweet dishes were wonderful. The false friend is the sharpest break on the plate. English, French, German, and Japanese do not betray you. They merely make you build a phrase every time. “After-dinner conversation” is the English phrase that adds its own error: the sobremesa belongs at least as much to lunch.
Nothing here is unsayable. A narrator can write “we stayed two hours.” What the noun gives a Spanish sentence is the right to treat that stay as a known object, the way “weekend” is a known object. Languages without the noun use a description. The description works. It works as a description.
Why this break matters to a reader
In a scene, the difference is between a named social institution and a bit of lingering. “We had a long sobremesa” tells a Spanish reader what kind of afternoon it was. “We kept talking after lunch” tells an English reader the facts and not the institution. The Portuguese dessert-reading tells the wrong facts. Of the three, only the third actually misleads. The second is a gap. The plate is here to keep those apart.