Verb
(transitive) To be of the right size and shape to be placed in a location.
The round peg will fit into the circular hole.
(transitive, figuratively) To be of similar cultural or social status as the members of a group of people.
As a retired sergeant, you should fit into the crowd at the officers' club.
If you're too big to fit into fashion, then you just have to do your own fashion. Vivienne Westwood
Some of the most wonderful people are the ones who don't fit into boxes. Tori Amos
And from a military school which taught me that to fit into society, you can't just do anything you damn well please because it will suit you. And that it's much better to be with the winners than it is with the losers. Sam Donaldson
I fit into the quirky, character class type of actor. Debra Wilson
Reshape one's feet to fit into new shoes. Chinese Proverb
Reshape one's foot to try to fit into a new shoe. Chinese Proverb