Wiktionary
key up
vb. 1 (context architecture English) To raise (the whole ring of an arch) off its centering, by driving in the keystone forcibly. 2 (context music English) To raise the pitch of. 3 (context figurative English) To produce nervous tension in.
Usage examples of "key up".
I caught the key up and quickly but very carefully pressed it into the jar.
I smashed the Key Rabbit to the floor, and Li Kao's hands darted out and snatched a chain and jerked a key up over the Key Rabbit's head.
She simply could not envision him slipping the key up his ass before he ported to the harem.