D defs.my
Entry 2 senses Webster, 1913

Becalm

/bĭk-äm'/ · Be·calm · IPA /bɪˈkɑm/
01 v. t. To render calm or quiet; to calm; to still; to appease.
imp. & p. p. Becalmed; p. pr. & vb. n. Becalming
  1. 1.
    To render calm or quiet; to calm; to still; to appease.
    “Soft whispering airs . . . becalm the mind.” — Philips.
  2. 2.
    To keep from motion, or stop the progress of, by the stilling of the wind; as, the fleet was becalmed.