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A past participle of tread.
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.
a past participle of tread
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
v. trod, trod•den trod, tread•ing, v.i.
1. to set down the foot or feet in walking; step; walk.
2. to step or walk, esp. so as to press, crush, or injure something; trample (usu. fol. by on or upon).
3. (of a male bird) to copulate.v.t.
4. to step or walk on, about, in, or along.
5. to trample or crush underfoot.
6. to form by the action of walking or trampling: to tread a path.
7. to treat with disdainful harshness or cruelty; crush; oppress.
8. to perform by walking or dancing: to tread a measure.
9. (of a male bird) to copulate with (a female bird).n.
10. the action of treading.
11. the sound of footsteps.
12. manner of treading or walking.
13. a single step.
14. any of various things or parts on which a person or thing treads, stands, or moves.
15. the horizontal upper surface of a step in a stair.
16. the part of a wheel, tire, or runner that bears on the road, rail, etc.
17. the pattern raised on or cut into the face of a rubber tire.
18. the part of a rail in contact with the treads of wheels.
19. the part of the undersurface of the foot or of a shoe that touches the ground.Idioms:
1. tread on someone's toes, to offend or irritate someone.
2. tread water,
a. to maintain the body erect in the water with the head above the surface, usu. by a pumping movement of the legs and sometimes the arms.
b. to maintain one's position without making any progress.
[before 900; Middle English treden (v.), Old English tredan, c. Old High German tretan; akin to Old Norse trotha, Gothic trudan]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.