叫板

to signal the musicians (in Chinese opera, by prolonging a spoken word before attacking a song) / (coll.) to challenge

to shout / to call / to order / to ask / to be called / by (indicates agent in the passive mood)

variant of 叫[jiao4]

board / plank / plate / shutter / table tennis bat / clappers (music) / CL:塊|块[kuai4] / accented beat in Chinese music / hard / stiff / to stop smiling or look serious

see 老闆|老板, boss

to catch sight of in a doorway (old)