Meaning of confine in English
US /kənˈfaɪn/ UK /kənˈfaɪn/
1. keep a person or an animal in a particular place so that they cannot leave it; lock up or shut
Is it cruel to confine a bird in a cage?
2. keep someone or something within the limits of a particular activity, subject, area etc.; restrict or limit
Confine your criticism to matters you understand.