Children's, Intermediate and Advanced Online English Dictionary & Thesaurus

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balance beam a long wooden horizontal beam raised about four feet above the floor, on which women gymnasts perform various balancing routines. [2 definitions]
beam-ends the ends of the crossbeams of a ship.
high beam the brighter, farther-reaching setting for the headlights of a vehicle.
I-beam a steel beam, used for construction, whose cross section resembles the capital letter I in shape.
low beam the dimmer setting for the headlights on a vehicle, providing short-range illumination.
on her beam-ends of a ship, tipping so far to one side as to be nearly capsizing.
particle beam a stream of atomic or subatomic particles projected at extremely high speed and used in research, as into nuclear reactions, or in military weaponry.
tie beam a horizontal beam used to connect two structural members, as in a roof truss.