Home › Words › S › stonewallerstonewallerstonewaller means one who stonewalls.Among words judged in Lexicurio's Arena, stonewaller ranks #3,411 of 42,747 for Qualifying.EtymologyFrom stonewall + -er.nounOne who stonewalls.A particularly obstructive blocker.Definitions & examples from Wiktionary (CC BY-SA 3.0).