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tram 1 (trăm)
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n.
1. Chiefly British
a. A streetcar.
b. A streetcar line.
2. A cable car, especially one that rolls along an overhead cable along which it is drawn by a second, moving 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.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
tram 2 (trăm)
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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.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 
tram 3 (trăm)
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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 trāma, weft, woof.]

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.

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