knacken

Etymology
From, probably ultimately related to. Related to 🇨🇬,, , 🇨🇬.

Verb

 * 1)  to make a cracking sound
 * 2)  to crack (open)
 * 3)  to crack (a mystery, secret, etc.); to persuade (to reveal something)
 * 4)  to pick (a lock)
 * 5)  to sleep
 * 1)  to crack (a mystery, secret, etc.); to persuade (to reveal something)
 * 2)  to pick (a lock)
 * 3)  to sleep
 * 1)  to pick (a lock)
 * 2)  to sleep