D defs.my
Entry 1 sense Webster, 1913

Steam up

/(stēm` ŭp")/ · Steam· up · IPA
01 v. t. To cause to be covered by a translucent layer of condensed water in fine droplets, such as by breathing on a cold window; to fog; as, to st…
  1. 1.
    To cause to be covered by a translucent layer of condensed water in fine droplets, such as by breathing on a cold window; to fog; as, to steam up one's eyeglasses.