Definition of keep in
1 : to not show or express (something, such as an emotion) <You shouldn't keep your anger in all the time.>
2 : to continue to provide (someone) with (something needed or wanted) <It's very expensive keeping my children in clothes that fit.>
Learn More about keep in
Seen and Heard
What made you want to look up keep in? Please tell us where you read or heard it (including the quote, if possible).