What is "feather one's nest"

alt. (context idiomatic English) To achieve benefits, especially financial ones, by taking advantage of the opportunity with which one is presented; to amass a comfortable amount of personal wealth. vb. (context idiomatic English) To achieve benefits, especially financial ones, by taking advantage of the opportunity with which one is presented; to amass a comfortable amount of personal wealth.

v. enrich oneself by taking advantage of one's position; "The congressmen feathered his nest through his connection with big business"