Wormhole

wiktionary

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worm +‎  hole. In the scientific sense, introduced by John Archibald Wheeler. 

etymonline

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wormhole (n.)

also worm-hole, 1590s, "hole made by a burrowing insect" (in fruit, timber, etc.), from worm (n.) + hole (n.). Astrophysics sense is attested from 1957.