1. Rendered motionless for lack of wind
   "It was, and is, a notoriously likely spot for a vessel under sail to be becalmed"

1. Stop being excited, agitated or moving
   "She tried to becalm the angry crowd";
   - steady, calm
    
2. (nautical) prevent (a sailing vessel) from moving by lack of wind
   "The ship was becalmed for three days"

See also: nonmoving, unmoving

Type of: stabilise [Brit], stabilize

Encyclopedia: Becalmed