: to keep (someone or something) within limits : to prevent (someone or something) from going beyond a particular limit, area, etc.

What does confine mean in reading?

to enclose within bounds; limit or restrict: She confined her remarks to errors in the report. Confine your efforts to finishing the book.

Does not confine meaning?

verb. [with object]confine someone/something to. 1Keep or restrict someone or something within certain limits of (space, scope, or time) 'he does not confine his message to high politics'