Senses
键/ 鍵 key part
(bound form) most important part of something; crucial point
键/ 鍵 key (input device)
key on a keyboard, piano, mouse, or electronic device; button
键/ 鍵 chemical bond
(bound form) chemical bond
键/ 鍵 key (mechanical)
(mechanics) wedge or piece of metal used to lock a wheel or gear onto a shaft
键/ 鍵 door bolt
(literary) metal pin or bolt used to secure a door latch
键/ 鍵 linchpin
(literary) iron pin at the end of an axle to keep the wheel in place