take cover

take cover idiom
Seek protection, find a hiding place, as in It started to pour so we took cover under the trees, or He wanted to avoid the reporters so we said he could take cover in our summer cottage. This term uses cover in the sense of “shelter” or “concealment,” a usage dating from the 1400s.

The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

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