A worm and wheel, a gear arrangement consisting of a screw (the worm) whose thread meshes with a gear wheel to turn the direction of drive through a right angle, typically with a large (1:10 to 1:60) speed reduction and similar torque increase.

The larva of an American moth (Heliothis phloxiphaga), destructive to phloxes.

The common roundworm (Ascaris lumbricoides), sometimes found in the human intestine, and rarely in the stomach.

The larva of the juniper-twig geometer (Patalene olyzonaria), feeding upon the leaves of the juniper.

Alvinella pompejana, a deep-sea polychaete worm.

(vulgar, slang) To masturbate.

Any of the Nematomorpha, a parasitic worm found throughout the world.

tomato worm (Manduca quinquemaculata)

The caterpillar of the five-spotted hawkmoth (Manduca quinquemaculata).

A small nematoid worm found in the water tanks of India, supposed by some to be the young of the guinea-worm.