'bumming' definitions:
Definition of 'bumming'
From: GCIDE
- bum \bum\, v. i. [imp. & p. p. bummed; p. pr. & vb. n. bumming (?).] [See Boom, v. i., to roar.] To make murmuring or humming sound. --Jamieson. [1913 Webster]
- to bum around to wander about idly or aimlessly. [PJC]