Clips of omissions from a hippie classic? (8)

I believe the answer is:

haircuts

'clips' is the definition.
(clip can mean a haircut)

I don't understand the rest of the clue.

(Other definitions for haircuts that I've seen before include "Trims" , "Barbers' services" .)

I've seen this clue in The Guardian.

Want a hint initially instead of a full solution? Install my app