Bosom
wiktionary
From Middle English bosom, bosum, from Old English bōsm, from Proto-West Germanic *bōsm, from Proto-Germanic *bōsmaz, from Proto-Indo-European *bʰewH-(“to swell, bend, curve”). Cognate with Saterland Frisian Bossem, Bousem(“bosom”), West Frisian boezem(“bosom”), Dutch boezem(“bosom”), German Busen(“bosom”). Related also to Albanian buzë(“lip”), Greek βυζί(vyzí, “breast”), Romanian buză(“lip”), Irish bus(“lip”), and Latin bucca(“cheek”).
etymonline
bosom (n.)
Old English bosm "breast; womb; surface; ship's hold," from West Germanic *bōsmaz (source also of Old Frisian bosm, Old Saxon bosom, Middle Dutch boesem, Dutch boezem, Old High German buosam, German Busen "bosom, breast"), perhaps from PIE root *bhou- "to grow, swell," or *bhaghus "arm" (in which case the primary notion would be "enclosure formed by the breast and the arms"), or possibly a word from a substrate language.
Bosoms in the narrowed or euphemistic meaning "a woman's breasts" is from 1959; bosomy "big-breasted" is from 1928 (earlier of rolling hills, etc.). Bosom-friend is attested 1580s; bosom buddy from 1924. Abraham's bosom "the abode of the blessed" is from Luke xvi.19-31.
