主機板

motherboard

owner / master / host / individual or party concerned / God / Lord / main / to indicate or signify / trump card (in card games)

main engine / (military) lead aircraft / (computing) host computer / main processor / server

(bound form) machine; mechanism / (bound form) aircraft / (bound form) an opportunity / (bound form) crucial point; pivot / (bound form) quick-witted; flexible / (bound form) organic

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)