What does ‘on the make’ mean?

( pp ) Flirting, looking for someone to seduce. The way she is talking to all the men looks like she is on the make.
( pp ) Looking for profit or advantage. His words with me suggested that he is on the make for a promotion.
( pp ) Flirting, making advances on people of the opposite sex. Clara Belle was down at the bar last night on the make.
( pp ) Ambitious, out to succeed. Elroy dressed like a man on the make in the financial world.