盖 gài to cover

to cover; to hide; to protect; lid; to conceal

怎么记住“盖”: 𦍌 sheep + 皿 dish = to cover. The farmer's wife sees a hungry sheep sneaking toward the pie dish and rushes to cover it with a tea towel.

部件结构

盖 = 𦍌 sheep + 皿 dish

Gushi 故事

The farmer's wife sees a hungry sheep sneaking toward the pie dish and rushes to cover it with a tea towel.

Verb meaning "to cover/put a lid on": 盖被子 (gài bèizi) "to cover oneself with a quilt", and as a noun it's "lid" (锅盖 guōgài "pot lid").
覆盖 (fùgài) "to cover" is the more formal/abstract version, used for area or scope (信号覆盖 "signal coverage"); 掩盖 (yǎngài) means "to conceal" a fact or truth.
涵盖 (hángài) "to encompass" is common in written summaries: 内容涵盖各个方面 "the content covers every aspect".
膝盖 (xīgài) "knee" is a completely unrelated body-part compound worth memorizing separately - the 盖 there just means the kneecap "cover".