to show sexual interest in or make advances to somebody in a playful way
said of bird: to flap (its wings) or waggle (its tail)
flirt with
to show superficial or casual interest in or liking for (something)
He flirted with hippiedom for a while
to risk (danger, death, etc), esp deliberately and as a means of obtaining excitement
Climbers realize they're flirting with death
flirtatious adj
flirtatiously adv
flirty adj
[orig meaning ‘to flick or strike’; perhaps imitative]