(1):

(v. i.) To utter words of disapprobation and displeasure; to find fault; to contend angrily.

(2):

(p. pr. & vb. n.) Fig.: To be noisy about; to chafe against.

(3):

(p. pr. & vb. n.) To rebuke; to reprove; to scold; to find fault with.

(4):

(n.) A continuous noise or murmur.

(5):

(v. i.) To make a clamorous noise; to chafe.