Wap/wɑp/ Definition 1 of 3Pro Tip 1/3Colloquial Use Used informally among friends or in relaxed settings, not in formal language. I might just wap the next person who interrupts me! Pro Tip 2/3Regional Flavor Most common in the Northern UK, might be unfamiliar or misunderstood in other regions. He’s fond of wapping the rugby ball before a match. Pro Tip 3/3Physical Action Often describes a brief, single action of hitting or striking with force. She wapped the malfunctioning remote a few times.