Bop/bɑːp/ Definition 1 of 3Pro Tip 1/3Light Impact Bop as a verb means a very gentle or playful hit, not meant to harm. She playfully bopped him with the pillow during the fight. Pro Tip 2/3Informal Use The verb 'bop' is casual language, often used among friends or in light-hearted situations. Next time you bop my nose, I'm going to tickle you! Pro Tip 3/3Figurative Speech Sometimes 'bop' expresses annoyance or frustration in a mild, joking way. Stop talking or I'll bop you!