遮護板

shield / protective board

to cover up (a shortcoming) / to screen off / to hide / to conceal

to protect

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)