Definition
A curl is distoration, puffing, and crinkling of a leaf resulting from unequal growth or destrution die to pest attack.
Etymology. 1447, metathesis of crulle (c.1300), probably from O.E. or from M.Du. krul "curly," from P.Gmc. *krusl-. The game of curling is from 1620; curlicue is from 1844, perhaps from the letter Q.