plural of knock-back

Alternative form of knockback

present participle of knock over

simple past tense and past participle of knock for a loop

present participle of knock for a loop

(networking) A means of securing ports on a firewall by requiring the host to attempt to connect to a prespecified sequence of closed ports before being allowed access to the desired port.

To ask for entrance or admission into. / Used other than figuratively or idiomatically: see knock, on, the, door, of.

(bingo) four

simple past tense and past participle of knock on the door of

present participle of knock at the door of