Longman Dictionary of Contemporary English
Wiktionary
n. A local member of a trade union elected to represent his fellow workers in discussions with the management at a workplace.
WordNet
n. a union member who is elected to represent fellow workers in negotiating with management [syn: steward]
Usage examples of "shop steward".
Lesurier started work down on the bench on Wednesday evening and found to his surprise and pleasure that the shop steward had insisted that he should be paid, which put another twenty-seven shillings in his pay packet at the week's end.
I'm shop steward for the Winnipeg Section so I've got to go fight it.
In fact, the only reason there is a nightshift lift driver at all is because the Storemen & Packers Union have a very strong shop steward on the print floor whose name, you're not going to believe it, is Joe Bloggs.
The engineer in charge and that talky shop steward had no reason to grumble.
We didn't hear from the shop steward, but Miss Gloria started doing as she pleased.