sein
French, noun/sɛ̃/
sein is spelled S-E-I-N (4 letters) and appears 112 times per million words in written French, the 736th most frequent French word form (wordfreq, 2021 data). Sein is a French masculine noun meaning “breast (the chest)” (English Wiktionary, September 2026). The French Wiktionary (Wiktionnaire) defines it as “Partie antérieure du thorax humain, où se trouvent les mamelles”.
What does sein mean in English?
noun
- 1
masculinebreast (the chest)
Sur votre jeune sein laissez rouler ma tête.
- 2
masculinebreast
Elle a de gros seins.
- 3
masculinewomb
Elle a porté cet enfant dans son sein.
- 4
masculinebosom
au sein de la famille
Source: English Wiktionary, French section, dump of September 2, 2026 (CC BY-SA 4.0).
How French dictionaries define it
noun: 1. Partie antérieure du thorax humain, où se trouvent les mamelles. 2. Poitrine des femmes. 3. Chacune des mamelles des femmes. 4. ou Partie du corps des femmes où se développe l’enfant de la conception à la naissance ; utérus.
The definition in the French Wiktionary (Wiktionnaire), in French.
Source: French Wiktionary (Wiktionnaire), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of sein
- seins plural
Source: English Wiktionary and French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce sein?
- /sɛ̃/
- \sɛ̃\
- [o sɛ̃]
Sources: English Wiktionary, French Wiktionary (Wiktionnaire) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to sein
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is sein in French?
sein appears 112 times per million words in written French.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).