wormhole
back door
Source: The Free On-line Dictionary of Computing (27 SEP 03)
Wormhole \Worm"hole`\, n. A burrow made by a worm. [1913 Webster]
Source: The Collaborative International Dictionary of English v.0.48
Source: WordNet (r) 2.0
Wormhole \Worm"hole`\, n. A burrow made by a worm.
Source: Webster's Revised Unabridged Dictionary (1913)