(verb) - Complain or protest about something in a bad-tempered but typically muted way. (synonyms: complain, grouse, whine, bleat, carp, mutter, protest, make a fuss; informal - moan, bellyache, beef, bitch, grouch)
He was grumbling about the food not being hot enough.
(noun) - A complaint. (synonyms: grievance, protest, cavil, quibble, criticism, grouse; informal - grouch, moan, gripe, bitch, beef)
His grumble was that the restaurant closed too early.
Can of Grumble is an entertainment site created by Thomas and Paula Scopel who, under the guise of Mr. and Mrs. Grumble, humorously embrace the art of the complaint...or grumble, through video & print using snippets, satire & parody.