ABCDEFGHIJKLMNOPQRSTUVWXYZ

An adult of the grey garden slug (Deroceras sp.) on a kava (Piper methysticum) leaf.

Slug feeding injury to kava (Piper methyticum) leaves.

Slug feeding injury to ornamental cabbage plants.

Definition

A slug is any of various small, snaillike, chiefly terrestrial gastropod mollusks of the genus Limax and related genera, having a slow-moving elongated body with no shell or only a flat rudimentary shell on or under the skin.

Etymology. "shell-less land snail," 1704, originally "lazy person" (1408); related to sluggard.