fire-fly

A child watches a fire-fly glow in the evening garden.

Definition

1. Noun:
   • A nocturnal beetle: "fire-fly" refers to any soft-bodied beetle of the family Lampyridae, known for producing a greenish or yellowish light from its abdomen, typically for attracting mates.

Usage Examples

• Noun:
  • The children caught a fire-fly in a jar to watch it glow at night. (A nocturnal beetle that emits light.)
  • In summer evenings, fire-flies flicker across the garden like tiny stars. (The beetles are seen flashing their light.)

Advanced Usage

• "fire-fly light": the bioluminescent glow produced by the insect.

  • The fire-fly light is a result of a chemical reaction in its body. (The light is created by a process called bioluminescence.)

• "fire-fly season": the time of year when these beetles are most active, often in warm, humid climates.

  • June is the peak of fire-fly season in many parts of North America. (The time when fire-flies are abundant.)

Variants and Related Words

• Firefly (n): a common alternative spelling of "fire-fly" (often written as one word).

  • A firefly landed on her hand and blinked its light. (The same insect, spelled without a hyphen.)

• Lightning bug (n): a regional synonym for "fire-fly", especially in the eastern United States.

  • We call them lightning bugs here, but they are the same insect. (A synonym for fire-fly.)

Synonyms

• Glowworm: a related insect that also produces light, though usually wingless or larval.
  • Glowworms are often confused with fire-flies, but they are a different stage of development. (A similar bioluminescent insect.)

Related Idioms

• Not a fire-fly in the sky: an idiomatic expression meaning complete darkness with no visible lights.
  • The night was so dark there wasn't a fire-fly in the sky. (No light sources were visible.)