Worm

A worm was any manner of creature that tended to be round, long, and articulated. Donna Noble compared Time Lords to worms after witnessing the severed hand of the Tenth Doctor grow into a new Doctor. (DW: Journey's End)

Serpentine (higher) lifeforms

• Deathworms (DW: Doctor Who)
• Prisoner Zero (DW: The Eleventh Hour)
• Psychic Worms (BFA: The Wormery)
• The Process (NA: Cat's Cradle: Time's Crucible)
• Voracious Craws (NSA: Sick Building)
• Wurms (NSA: The Art of Destruction)
• Harmonelids (DWA: Earworm)
• Alvarian space wyrms (IDW: The Forgotten)

Lower lifeforms

• Earthworms
• Oroborous Worms (BNA: The Mary-Sue Extrusion)
• Jakra worms (NSA: Ghosts of India)
• Spulver Worms (EDA: Coldheart)
• Bore worms (TWN: The Undertaker's Gift)
• Alien tapeworms (TWN: Slow Decay)
• Myxilinic frost-worm (TDL: The Colour of Darkness)
• Thermortian Sand Worm (IDW: The Forgotten)
• Alifabe (DWA: Sky Scraper)
• Natrium Worm (DWA: The Salt Solution)
• Alvega Earthworm (TV21: The Amaryll Challenge)
• Norebo Worm (TN: Nightdreamers)
• Bookworms (IHP: Hunger from the Ends of Time)

Other creatures mistaken for worms:

• Giant maggot (DW: The Green Death)
• Cybermat (DW: Revenge of the Cybermen)
• Horda (DW: The Face of Evil)
• Fendahl (DW: Image of the Fendahl)

Worms of any sort have nothing to do with wormholes.