Quick definitions from WordNet (pat)

▸ noun:  the sound made by a gentle blow
▸ noun:  a light touch or stroke
▸ verb:  hit lightly ("Pat him on the shoulder")
▸ verb:  pat or squeeze fondly or playfully, especially under the chin
▸ adjective:  exactly suited to the occasion ("A pat reply")
▸ adjective:  having only superficial plausibility
▸ adverb:  completely or perfectly ("He has the lesson pat")
▸ name:  A female given name (common: 1 in 2500 females; popularity rank in the U.S.: #387)
▸ name:  A male given name (common: 1 in 4545 males; popularity rank in the U.S.: #457)
▸ name:  A surname (very rare: popularity rank in the U.S.: #50087)

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▸ Also see pat