take a leak

take a leak (very informal!)

to pass liquid waste out of the body. I'll be back in a moment - I've gotta take a leak.

See also: take

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take a leak

to excrete urine. He could see the truck driver with his back to them, taking a leak against an old tree.

Usage notes: usually said about men or boys, but sometimes said about an animal: The dog ran under the trees and took a leak.

See also: take