'To knuckle to' definitions:
Definition of 'To knuckle to'
From: GCIDE
- Knuckle \Knuc"kle\, v. i. [imp. & p. p. Knuckled;; p. pr. & vb. n. Knuckling.] To yield; to submit; -- used with down, to, or under. [1913 Webster]
- To knuckle to. (a) To submit to in a contest; to yield to. [Colloq.] See {To knock under}, under Knock, v. i. (b) To apply one's self vigorously or earnestly to; as, to knuckle to work. [Colloq.] [1913 Webster]