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tr.v. be·calmed, be·calm·ing, be·calms
1. To render motionless for lack of wind: "Across the harbor, a small sailing skiff, becalmed near some reeds, caught the breeze again" (Horace Freeland Judson).
2. To make calm or still; soothe.
rare to calm down
1. to deprive (a sailing vessel) of the wind necessary to move it.
2. to calm.
Past participle: becalmed