1
to become familiar with;to get used to;to become accustomed to;to adapt oneself to;to become attached to;to become friendly with
彼は新しい学校での生活になかなかなじめなかった。
He found it very difficult to adjust himself to life in the new school.
2
to come to fit;to go (well) with;to suit;to match;to harmonize (with);to blend in (with);to agree with (e.g. one's skin)