Merriam-Webster Collegiate Dictionary - squirt gun

 noun  Date: 1803 water pistol SQUIRT  I. verb  Etymology: Middle English; akin to Low German swirtjen to ~  Date: 15th century  intransitive verb to come forth in a sudden rapid stream from a narrow opening ; spurt  transitive verb to cause to ~  • ~er noun  II. noun  Date: 15th century  1.  a. an instrument (as a syringe) for ~ing a liquid  b. a small quick stream ; jet  c. the action or an instance of ~ing  2.  a. an impudent youngster  b. kid 3