D defs.my
Entry 2 senses Webster, 1913

chesty

· IPA /ˈt͡ʃɛsti/
01 adj. marked by a large or well-developed chest.
  1. 1.
    marked by a large or well-developed chest.
  2. 2.
    having or showing feelings of unwarranted importance out of overbearing pride; as, chesty as a peacock.
Syn. big-chested. — Syn. -- arrogant, self-important.