pin·set·ter (p?n?s?t??r)n. An employee or a mechanical apparatus that sets up pins in a bowling alley.American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.pinsetter (?p?n?s?t?) or pinspottern1. (Bowls & Bowling) a machine in a bowling alley that sets the pins into their correct positions2. (Bowls & Bowling) a person in a bowling alley who sets the pins into their correct positionsCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014pin?set?ter (?p?n?s?t ?r) n. a person or mechanical apparatus in a bowling alley that places the pins in position. [1915?20] Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.