tip off

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See: notify
References in periodicals archive ?
The tip off, which came from a member of the public, relates to suspicious behaviour in the area.
May 20, 1994: Officers acting on a tip off from Haase searched an address in Heathwaite Crescent, Norris Green, and found 600 bullet cases, bullet heads, gun powder and a bullet press.
FRUSTRATED Ronnie O'Sullivan was accused of deliberately ripping the tip off his cue as battling Scot Graeme Dott kept a lid on the Rocket last night.
O'Sullivan struggled to hit anything approaching top gear and bit the tip off his cue as Henry crossed the winning line.
WAUN Wen Community Centre in Rhondda Cynon Taff is to be the first site in the borough to "tip off" with the midnight basketball scheme.