bosomiest

Adjective

bosomy (comparative bosomier or more bosomy, superlative bosomiest or most bosomy)

1. Full of sheltered hollows or recesses.
   • […] I beheld, in momentary sun, / One of thy hills gleam bright and bosomy, / Just like that orb of orbs, a human one, / Let forth by chance upon a lover's eye.1815 May (date written), Leigh Hunt, “[Translations, &c.] [Sonnets.] VI. To Hampstead..”, in The Feast of the Poets, […], 2nd edition, London: […] Gale and Fenner, […], published 1815, →OCLC, page 161
2. Having a large bosom.
   • The essence of a tandem team is surely that it should be well balanced, sporting in appearance and that the horses themselves should at all events convey the impression of being able to do a long stage with ease and comfort. Now there can be nothing "sporting" about a beefy, bosomy, bad-shouldered...1908 June 20, “The Royal Horse Show”, in [Peter Anderson Graham], editor, Country Life, volume XXIII, number 598, London: [s.n.], →OCLC, page 897

   Synonyms:

   big-breasted, buxom, busty, chesty