sein
/sɛ̃/
1.
nounmasculine
breast (anatomical)
chest (in context of the female breast)
Elle donne le sein à son bébé.
She is breastfeeding her baby.
Synonyms:poitrine, buste
2.
nounmasculine
within, inside (the interior of an organization, group or context; often used in the phrase 'au sein de')
Il y a des tensions au sein du groupe.
There are tensions within the group.
Synonyms:intérieur, milieu
