tip off
verb- To alert or inform (someone), especially confidentially. · An anonymous caller tipped off the police that the suspect would be in the area.· Someone must have tipped him off. [A likely explanation for why he has disappeared.]
- To put the ball in play by throwing it up between two opponents.
- To begin. · The game tips off in an hour, so hurry back!
- To use a particular brush technique for producing a flawless surface on a wet coat of paint.
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