Members of a fire department.
fire department definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
a municipal department, usually consisting of one or more fire companies, whose work is fighting fires and preventing their occurrence
fire department definition by American Heritage Dictionary
A department, especially of a municipal government, whose purpose is preventing and putting out fires.