1. a marine worm that produces light or has a bright, flame-like appearance, especially a polychaete worm of the genus Odontosyllis
Usage: marine biology; also called fire worm or fire-worm
2. any of various worms or larvae that are destructive to plants or crops, particularly those that feed on plant tissues
Usage: agriculture; informal

Examples

• The fireworm is a bioluminescent creature found in tropical ocean waters.
• Researchers studied the fireworm's ability to produce light through chemical reactions.
• Farmers must monitor their crops for fireworm infestations during the growing season.
• The Caribbean fireworm is known for its striking red coloration and venomous bristles.
• At night, fireworms in the ocean create a spectacular display of blue-green light.