slip from

slip from (something)

To not have enough friction to maintain a grip on something and fall away from it as a result. I thought the vase would be all right on the shelf, but it was at a bit of an angle and ended up slipping from it about 20 minutes later. A: "Jack slipped from the roof and broke his arm!" B: "I warned him that the tiles up there would be wet and slippery."
See also: slip
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

slip from something

to fall away from something; to lose one's step or grasp and fall from something. He slipped from the top step and fell down the other three. Ted slipped from the stool and fell on the floor.
See also: slip
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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If the surface slip layer is lost, it usually gets replenished by slip from the bulk of the film.