Definition of glowworm
: any of various luminous insect larvae or adults with wings rudimentary or lacking; especially : a larva or wingless female of a firefly (family Lampyridae) that emits light from the abdomen
Did You Know?
This is any crawling, luminous insect that emits light either continuously, or in prolonged glows, rather than in the brief flashes that are characteristic of most fireflies. Glowworms include larvae and adult (often wingless) females of fireflies and certain other beetle species, as well as the larvae of certain gnat species. They are widely distributed. There is great diversity in the size, number, location, and structure of the bioluminescent organs of glowworms.
Origin and Etymology of glowworm
First Known Use: 14th centurySee Words from the same year
GLOWWORM Defined for English Language Learners
Definition of glowworm for English Language Learners
: a type of insect that produces a small amount of light from its body
GLOWWORM Defined for Kids
Definition of glowworm for Students
: an insect or insect larva that gives off light
Seen and Heard
What made you want to look up glowworm? Please tell us where you read or heard it (including the quote, if possible).