verb intransitive, verb transitive
to laugh derisively (at); sneer or jeer
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'fleer'ME flerien, prob. < Scand, as in Dan dial., Norw flire, to snicker, laugh, prob. < IE base *plēi-, bald, bare