The Collaborative International Dictionary
Chum \Chum\, v. i. [imp. p. p. Chummed; p. pr. & vb. n. Chumming.] To occupy a chamber with another; as, to chum together at college. [U. S.]
Wiktionary
vb. (present participle of chum English)
WordNet
See chum
Wikipedia
Chumming (American English from Powhatan) is the practice of luring various animals, usually fish such as sharks, by throwing "chum" into the water. Chum is bait consisting of fish parts, bone and blood, which attract fish, particularly sharks owing to their keen sense of smell.
Also known as rubby dubby (West Country and Yorkshire, UK), shirvey or chirvey (Guernsey, Channel Islands), berley or berleying (Australasia), and bait balls.
Chumming is illegal in some parts of the world (such as in the state of Alabama in the U.S.,) because of the danger it can pose by conditioning sharks to associate feeding with the presence of humans.
Chumming is a common practice seen as effective by fishermen all over the world, typically in ocean waters.
Usage examples of "chumming".
The Russians, and whatever locals worked with them, added to the shark presence by chumming the water with fresh meat and blood.
And as for the sea serpents that the slaveships lure into our waters, chumming them along with the bodies they throw overboard, well, we can welcome them right into Trader Bay and never need the boneyard again.
Hells, Cap'n, they lure the serpents right into our islands and ways, chumming them along with dead slaves.
It wouldn't look right to have people in their late twenties chumming around Europe with somebody in his middle fifties.
It wouldn't look right to have people in their late twenties chumming aroundEuropewith somebody in his middle fifties.
At any bar where he might be chumming for potential suckers, when the inevitable dispute eventually arose as to who should buy another drink, he would promptly suggest that they match for it.