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verb (used with object), plied, ply·ing.
  1. to work with or at diligently; employ busily; use: to ply the needle.
  2. to carry on, practice, or pursue busily or steadily: to ply a trade.
  3. to treat with or apply to (something) repeatedly (often followed by with): to ply a fire with fresh fuel.
  4. to assail persistently: to ply horses with a whip.
  5. to supply with or offer something pressingly to: to ply a person with drink.
  6. to address (someone) persistently or importunately, as with questions, solicitations, etc.; importune.
  7. to pass over or along (a river, stream, etc.) steadily or on a regular basis: boats that ply the Mississippi.
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verb (used without object), plied, ply·ing.
  1. to run or travel regularly over a fixed course or between certain places, as a boat, bus, etc.
  2. to perform one's work or office busily or steadily: to ply with the oars; to ply at a trade.
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Origin of ply1

1300–50; Middle English plien, aphetic variant of aplien to apply
Related formsply·ing·ly, adverb


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2. follow, exercise.


noun, plural plies.
  1. a thickness or layer.
  2. Automotive. a layer of reinforcing fabric for a tire.
  3. a unit of yarn: single ply.
  4. one of the sheets of veneer that are glued together to make plywood.
  5. Informal. plywood.
  6. bent, bias, or inclination.
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verb (used with object), plied, ply·ing.
  1. British Dialect. to bend, fold, or mold.
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verb (used without object), plied, ply·ing.
  1. Obsolete. to bend, incline, or yield.
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Origin of ply2

1300–50; Middle English plien (v.) < Middle French plier to fold, bend, variant of ployer, Old French pleier < Latin plicāre to fold; see fold1

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British Dictionary definitions for ply


verb plies, plying or plied (mainly tr)
  1. to carry on, pursue, or work at (a job, trade, etc)
  2. to manipulate or wield (a tool)
  3. to sell (goods, wares, etc), esp at a regular place
  4. (usually foll by with) to provide (with) or subject (to) repeatedly or persistentlyhe plied us with drink the whole evening; to ply a horse with a whip; he plied the speaker with questions
  5. (intr) to perform or work steadily or diligentlyto ply with a spade
  6. (also intr) (esp of a ship) to travel regularly along (a route) or in (an area)to ply between Dover and Calais; to ply the trade routes
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Word Origin

C14 plye, short for aplye to apply


noun plural plies
    1. a layer, fold, or thickness, as of cloth, wood, yarn, etc
    2. (in combination)four-ply
  1. a thin sheet of wood glued to other similar sheets to form plywood
  2. one of the strands twisted together to make rope, yarn, etc
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verb (tr)
  1. to twist together (two or more single strands) to make yarn
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Word Origin

C15: from Old French pli fold, from plier to fold, from Latin plicāre

Word Origin and History for ply




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Online Etymology Dictionary, © 2010 Douglas Harper