(transitive, obsolete) To make calm or still; make quiet; calm. / (transitive, nautical) To deprive (a ship) of wind, so that it cannot move (usually in passive).

simple past tense and past participle of becalm

(nautical, of a sailing ship) Unable to move due to lack of wind.

Third-person singular simple present indicative form of becalm

present participle of becalm