behave as though sexually attracted to someone, but playfully rather than with serious intentions

she began to tease him, flirting with other men in front of him

experiment with or show a superficial interest in (an idea, activity, or movement) without committing oneself to it seriously

a painter who had flirted briefly with Cubism

(of a bird) wave or open and shut (its wings or tail) with a quick flicking motion

a moorhen stepped out of the reeds, flirting its white tail

a person who habitually flirts

Jim was an outrageous flirt