steam up
verb- To become steamy.
- To become coated with condensation. · The bathroom mirror steamed up when he opened the shower door.
- To bring (a steam boiler) up to working steam pressure: to build up a head of steam inside (a boiler). · It takes about an hour to steam up the locomotive.
- to build up a head of steam. · Engine 99 had been steaming up since 21:00.
- To cook by steaming. · I'll steam up a bunch of dumplings.
Learn steam up in real texts
With a free account, hover any word in the library for its meaning, hear it read aloud, save words for review timed to your memory, and see how much of each book you already know.