peaky

[ pee-kee ]
/ ˈpi ki /

adjective, peak·i·er, peak·i·est.

Origin of peaky

First recorded in 1870–75; peak(ed)2 + -y1
Related formspeak·i·ly, adverbpeak·i·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for peakiness

peaky

/ (ˈpiːkɪ) /

adjective -kier or -kiest

wan, emaciated, or sickly

Word Origin for peaky

C16: of uncertain origin
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