sleep tight!

sleep tight

Sleep well. A phrase said to someone when they are going to sleep. A: "I think I'm going to head to bed." B: "OK, sleep tight! See you in the morning." Good night, sweetheart, sleep tight!
See also: sleep, tight
Farlex Dictionary of Idioms. © 2022 Farlex, Inc, all rights reserved.

sleep ˈtight!

(informal, spoken) used especially to children before they go to bed to say that you hope they sleep well: Good night, Pat, sleep tight!
See also: sleep
Farlex Partner Idioms Dictionary © Farlex 2017
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References in periodicals archive ?
Night night Ben, sleep tight! xxx One online reader, who didn't leave a name, said: "What a sad read, I have tears in my eyes god bless you all."