Pat is a versatile word in English with multiple meanings:
1. As a verb: to pat means to lightly touch or stroke with the palm of the hand
2. As a noun: a pat refers to a light touch or stroke
3. As an adjective: pat can mean overly rehearsed or glib
4. In slang: Pat is short for "Patrick" or used as a nickname
5. In gaming: PAT stands for "Perfect Attack Timing"