The American Heritage® Dictionary of the English Language, 4th Edition
n. A hole made by a burrowing worm.
n. Physics A theoretical distortion of space-time in a region of the universe that would link one location or time with another, through a path that is shorter in distance or duration than would otherwise be expected.
n. A hypothetical shortcut between two points in spacetime, permitting faster-than-light travel and sometimes time travel.
the GNU version of the Collaborative International Dictionary of English
n. A burrow made by a worm.
The Century Dictionary and Cyclopedia
n. The hole or track made by a worm, as in timber, fruit, etc.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. hole made by a burrowing worm
Word Usage
"This wormhole is then used by the attacker to install coding that turns your PC into an obedient “bot,” reporting to a command-and-control server operated by the “botmaster.”"