Where does “sein” come from?

sein (French) comes from Old French sein, from Latin sinus, from Proto-Italic *sinus.

sein (French): breast; womb; bosom

Definitions

  1. breast; womb; bosom

Ancestry of “sein”, step by step

StepLanguageWordMeaning
1Old Frenchseinbreast
2Latinsinusa hollow, cavity; curve, fold, winding; gulf, bay
3Proto-Italic*sinus—
Every word from Proto-Italic *sinus →Every word from Latin sinus →Every word from Old French sein →