WordReference Random House Unabridged Dictionary of American English © 2019
be•calm
(bi käm′),USA pronunciation v.t.
- Nautical, Naval Termsto deprive (a sailing vessel) of the wind necessary to move it;
subject to a calm:The schooner was becalmed in the horse latitudes for two weeks. - [Archaic.]to calm;
pacify.
- be- + calm 1550–60