DictionaryslugShell-less mollusk
noun

slug

SLUHG/slʌɡ/

A soft shell-less mollusk noted for slow movement.

A garden slug crawls slowly across a small green leaf.

A close, three-quarter side view of a single garden slug crawling on a small green leaf, its shell-less body, mantle, tapered tail and extended tentacles clearly visible.
Etymology

Middle English slug meant a lazy, slow person. The name spread to slow-moving animals and then to the shell-less snail, making its slow pace the defining image.

In context

Get.factual42:43
The strawberry may be trying to entice ground-living creatures. With its rasping tongue, the slug slices off small pieces of fruit
The Secret Garden - Springtime's Micro-Ecosystems - Full Nature Documentary

More examples

  • Slugs chew holes in the lettuce leaves overnight.
  • The slug leaves a shiny trail across the stone.
  • On lazy mornings, I move like a slug.

Forms

slug · slugs

Similar words

snail
Usually has a visible coiled shell, unlike a slug.
mollusk
Names the broader animal group containing slugs, clams, and octopuses.