An electronic circuit in which two transistors (one as current source, one as sink) are used to amplify a signal

(idiomatic) To take an excessive risk or to attempt some task unlikely to succeed, especially after having already been unexpectedly lucky.

A brassiere designed to elevate the breasts and enhance the cleavage

plural of push-up bra

(Britain, idiomatic) to do something, especially spend money, more extravagantly than usual, particularly for a celebration.

(informal) To do specific things to anger someone (less commonly, sexually arouse or otherwise elicit a strong reaction), especially intentionally or maliciously.

plural of push-pull amplifier

(idiomatic) To be dead.

(Australia, slang, vulgar) Attempting to do something with great difficulty generally with little chance of success.

To perform a difficult and thankless task.