Top Definition
To become uncloaked, lowering the cloaking field typically to begin the assault on an unwary enemy.
Chekov: The Romulans have decloaked!

Kirk: Oh Snap
by RainbowNinja July 06, 2009
When the skin on the shaft of the penis is pulled down to the base of the penis in a swift motion
bro she decloaked me in that handjob
by RiceCrackerMan April 02, 2013

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