grooved roller or pulley

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Fly system — Fly loft of the Theater Bielefeld in Germany A fly system, flying system or theatrical rigging system, is a system of lines (e.g. ropes), blocks (pulleys), counterweights and related devices within a theatre that enable a stage crew to quickly,… … Wikipedia
Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 … Wikipedia
watch — /woch/, v.i. 1. to be alertly on the lookout, look attentively, or observe, as to see what comes, is done, or happens: to watch while an experiment is performed. 2. to look or wait attentively and expectantly (usually fol. by for): to watch for a … Universalium
Elevator — For other uses, see Elevator (disambiguation). A set of lifts in the lower level of a London Underground station. The arrows indicate each elevator s position and direction of travel … Wikipedia
truck|le — truck|le1 «TRUHK uhl», verb, led, ling. –v.i. 1. to give up or submit tamely; be servile: »That man got his position by trucking to his superiors and flattering them. SYNONYM(S): cringe, fawn. 2. Obsolete. to trundle. –v.t. Obsolete. to trundle.… … Useful english dictionary

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