a person who uses a swab
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'swabber'< or akin to 16th-c. Du zwabber < zwabben, to do dirty work, splash, akin to Ger schwappen < IE base *swep-, to throw, pour out > L supare, to throw around