n., a knife with a blade that can be deployed by depressing a button, switch, or hidden mechanism. Switch-blade knives
vary in design; some deploy the blade in a linear fashion from the handle ("out the front") while others swing a blade
out in an arc from the side of the knife handle ("side opener").

Switch-blade or "automatic" knives vary
in legality from region to region. Gang
use of such knives in the American 1950s
prompted bans on such knives in several states that remain in force today.

Switch-blade knives are illegal in some
nations, such as Canada.

The term "automatic knife" has replaced
"switch-blade" in some knife collector
circles when describing modern designs.

Also "switch-blade".
He drew a switchblade knife from his pocket, and it snapped open with a report.
by T.D. January 20, 2003
a switchblade is a homeless or sketchy looking individual
they are called switchblades because they look like they might be carrying one on them
never approach a switchblade unless you have one currently in your left secret jacket pocket

switchblades are almost always smaller than 2 inches never above
by C-man+2=C-men February 6, 2023
noun (swich-bleyd)

1. a pocketknife, the blade of which is held by a spring and can be released suddenly, as by pressing a button
2. big bob walker's ham-carving tool of choice, chosen for its convenient storage facility located deep within the pocket of his short shorts.

also called switchblade knife, switch knife
big bob: why should i use kitchen knives to cut this ham when i can show off my handy switchblade, which i have recently drawn from my disgustingly short shorts
courtney: dad youre embarassing me
big bob: you listen to me, ass cheese. im big bob walker now lookatmyswitchblade
by Big Bob Walker August 24, 2006
Knife blade hidden inside its handle which is deployed by pressing a switch. Only Italian stiletto style switchblades have a switch safety. Commonly used in gangs in 1950's era know commonly used by assasins.
by Anonymous October 12, 2003
a knife with a blade that is realesed with the push of a button or lever, used by pimps and assasins everywhere.
by switch484 February 3, 2005
A uncircumcised penis. Usually in reference to it becoming hard and foreskin peeled down. ( a human red rocket)
She wanted to have sex with him after they left the bar but he was to drunk for his switchblade to work.
by Poot there it is!!! December 14, 2016
When you have an erection and you put it between your legs so it appears to be a mangina, then suddenly you release, and KAPOW WAM BAM STEAL THE VAN. THE KIDS GOT A STIFFY. This is often executed into a friends face because it fucking hilarious
I switchbladed rolf earlier in the night. I need to look out or he is gunna goat me
by WAMBAMSTEALTHEVAN13 July 28, 2010