English edit

Etymology edit

lengthen +‎ -er

Noun edit

lengthener (plural lengtheners)

  1. A person or thing that lengthens something
    This exercise is a great leg lengthener.
    I went to the store to get some eyelash lengtheners.
    • 1877, George Edwin Waring, Waring's Book of the Farm[1], page 325:
      RYE is the great lengthener of the seasons.

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