Определение feather one's nest в Английский Язык Английский Язык словарь
To achieve benefits, especially financial ones, by taking advantage of the opportunities with which one is presented; to amass a comfortable amount of personal wealth
Dempster must have feathered his nest pretty well; he can afford to lose a little business.
enrich oneself by taking advantage of one's position; "The congressmen feathered his nest through his connection with big business