go to sleep

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go to sleep

1. Literally, to begin sleeping. I'm sorry, but Kristin has already gone to sleep—can I take a message? I plan to go to sleep early after staying up so late last night.
2. To lose feeling in a limb, usually because one has sat or leaned on it for too long. Ugh, wait a second, my foot has gone to sleep—I can't get up just yet.
See also: sleep

ˌgo to ˈsleep

(informal) (of your leg, arm, hand, etc.) be unable to feel anything in your leg, etc. because it has been in a particular position for a long time
See also: sleep