From Scots dreep.
dreep (third-person singular simple present dreeps, present participle dreeping, simple past and past participle dreeped)
- (Scotland) To lower oneself from a height and drop the remaining distance.
- 2008, James Kelman, Kieron Smith, Boy, Penguin 2009, p. 77:
- If ye could not do the next jump ye just dreeped down and ran along the ground and up the next one.
Old English drēopan.
dreep (third-person singular present dreeps, present participle dreepin, past dreepit, past participle dreepit)
- to drip
- to drain, strain (food etc.)
- to soak
- to drop (oneself) down from a height