D defs.my
Entry 2 senses Webster, 1913

Astrut

· A·strut · IPA /əˈstɹʌt/
01 a. & adv. Sticking out, or puffed out; swelling; in a swelling manner.
  1. 1.
    Sticking out, or puffed out; swelling; in a swelling manner.[Archaic]
    “Inflated and astrut with self-conceit.” Cowper.
  2. 2.
    In a strutting manner; with a strutting gait.