Available Definitions:
1) p. pr. & vb. n. - To rebuke; to reprove; to scold; to find fault with.
2) p. pr. & vb. n. - Fig.: To be noisy about; to chafe against.
3) v. i. - To utter words of disapprobation and displeasure; to find fault; to contend angrily.
4) v. i. - To make a clamorous noise; to chafe.
5) n. - A continuous noise or murmur.