wormhole

Short definition from Wiktionary

Noun

1. 1
   A hole burrowed by a worm.
2. 2
   A hypothetical shortcut between two points in spacetime, permitting faster-than-light travel and sometimes time travel.
3. 3
   A location in a monitor program containing the address of a routine, allowing the user to substitute different functionality.

Verb

1. 1
   To make porous or permeable through the formation of small holes or tunnels.