The Collaborative International Dictionary of English v.0.48:
barbell \bar"bell`\ (b[aum]r"b[e^]l`), n. A bar to which heavy discs are attached at each end; -- it is used for weightlifting exercises. [WordNet 1.5]WordNet (r) 3.0 (2006):
barbell n 1: a bar to which heavy discs are attached at each end; used in weightlifting