an ornamental, fancy curl or twist, as in a signature.
Origin of curlicue
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
an intricate ornamental curl or twist
Word Origin for curlicue
C19: from curly + cue ²
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
1843, American English, from curly + cue, perhaps from French queue "tail" or letter Q in its looping script form. Earlier in this sense was curlie-wurlie (1772).
Online Etymology Dictionary, © 2010 Douglas Harper