downstroke

from WordNet (r) 3.0 (2006)
downstroke
    n 1: a stroke normally made in a downward direction
    
from The Collaborative International Dictionary of English v.0.48
Downstroke \Down"stroke`\, n. (Penmanship)
   A stroke made with a downward motion of the pen or pencil.
   [1913 Webster] Down syndrome
    

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