tuck in

US /tʌk ɪn/
UK /tʌk ɪn/
"tuck in" picture
1.

to eat a lot of food with enjoyment

:
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The children were starving, so they really tucked in when dinner was served.
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Go on, tuck in! There's plenty for everyone.
:
dig infeastgorgedevourchow down
2.

to make someone comfortable in bed by pulling the covers up around them

:
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She tucked the children in and read them a bedtime story.
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Make sure you tuck him in tightly, it's cold tonight.
:
put to bedsettle incover up
:
tuck