tram 1 (tr?m)n.1. Chiefly British a. A streetcar.b. A streetcar line.2. A cable car, especially one suspended from an overhead cable.3. A four-wheeled, open, box-shaped wagon or car run on tracks in a mine.tr.v. trammed, tram·ming, trams To move or convey in a tram.[Scots, shaft of a barrow, probably from Middle Flemish.]tram 2 (tr?m)n.1. An instrument for gauging and adjusting machine parts; a trammel.2. Accurate mechanical adjustment: The device is in tram.tr.v. trammed, tram·ming, trams To adjust or align (mechanical parts) with a trammel.[Short for trammel.]tram 3 (tr?m)n. A shiny silk thread with very little twist, primarily used as a weft yarn.[Middle English, contrivance, from Old French traime, contrivance, weft, from Latin tr?ma, weft, woof.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.tram (træm) n1. (Automotive Engineering) Also called: tramcar an electrically driven public transport vehicle that runs on rails let into the surface of the road, power usually being taken from an overhead wire. US and Canadian names: streetcar or trolley car 2. (Mining & Quarrying) a small vehicle on rails for carrying loads in a mine; tub[C16 (in the sense: shaft of a cart): probably from Low German traam beam; compare Old Norse thrömr, Middle Dutch traem beam, tooth of a rake] ?tramless adjtram (træm) n (Mechanical Engineering) machinery a fine adjustment that ensures correct function or alignmentvb, trams, tramming or trammed (Mechanical Engineering) (tr) to adjust (a mechanism) to a fine degree of accuracy[C19: short for trammel]tram (træm) n (Textiles) (in weaving) a weft yarn of two or more twisted strands of silk[C17: from French trame, from Latin tr?ma; related to Latin tr?ns across, tr?mes footpath]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014tram1 (træm) n., v. trammed, tram?ming. n. 1. Brit. a streetcar. 2. a tramway. 3. a truck or car on rails for carrying loads in a mine. 4. the vehicle or cage of an overhead carrier. v.t., v.i. 5. to convey or travel by tram. [1820?30; orig., shafts of a barrow or cart, rails for carts (in mines); perhaps