MEANING: noun:
1. The action of being airborne, such as that of a rocket, aircraft, etc.
2. The launch of a project, an initiative, etc.

ETYMOLOGY: From Old Norse lypta, from lopt (air) + off, stressed variant of the word of. Earliest documented use: 1907.

LIFT ORFF - to adapt music from The Planets and claim you wrote it

LIFE TOFF - born with a silver spoon, and still rich and elegant

SIFT-OFF - the finals of the Pillsbury Flour contest