Becalm \Be*calm"\, v. t. [imp. & p. p. Becalmed (?); p. pr. & vb. n. Becalming.]

1. To render calm or quiet; to calm; to still; to appease.

Soft whispering airs . . . becalm the mind. --Philips.

2. To keep from motion, or stop the progress of, by the stilling of the wind; as, the fleet was becalmed.

Source: Webster's Revised Unabridged Dictionary (1913)