hornworm: meaning, definition, pronunciation and examples
C1/C2Technical, scientific, gardening/agriculture, North American English. Uncommon in general everyday speech.
Quick answer
What does “hornworm” mean?
A large caterpillar of a hawk moth, especially of the genus Manduca, typically having a horn-like projection on its rear end.
Audio
Pronunciation
Definition
Meaning and Definition
A large caterpillar of a hawk moth, especially of the genus Manduca, typically having a horn-like projection on its rear end.
More generally, any of various similar caterpillars with a posterior horn. It is a common pest of solanaceous crops like tomatoes and tobacco.
Dialectal Variation
British vs American Usage
Differences
The term is predominantly used in North American English, especially where the specific pests (e.g., tomato hornworm, tobacco hornworm) are common. In British English, the specific insect might be referred to by its scientific name or a broader term like "hawk-moth caterpillar."
Connotations
Neutral in technical contexts; strongly negative in gardening/farming contexts (a destructive pest).
Frequency
Much more frequent in American English due to the prevalence of the specific pests in North American agriculture and gardening.
Grammar
How to Use “hornworm” in a Sentence
[verb] + hornworm (e.g., find, remove, control, identify, parasitize)hornworm + [verb] (e.g., feeds on, devours, infests)Vocabulary
Collocations
Examples
Examples of “hornworm” in a Sentence
verb
British English
- The plot was completely hornwormed by the end of July.
- This new organic spray effectively hornworms the pests.
American English
- The tomato plants got totally hornwormed last season.
- We need to hornworm these caterpillars before they strip the leaves.
adverb
British English
- [Extremely rare and non-standard]
American English
- [Extremely rare and non-standard]
adjective
British English
- We're facing a severe hornworm problem this year.
- Look for the tell-tale hornworm damage on the leaves.
American English
- I've got a hornworm situation in my vegetable garden.
- Check for hornworm eggs on the underside of the foliage.
Usage
Meaning in Context
Business
Rare. Potentially in the context of agricultural supply (e.g., 'pesticides for hornworm control').
Academic
Common in entomology, agriculture, and biology papers discussing pest species, life cycles, or biological control.
Everyday
Limited to gardening conversations, especially among tomato growers in North America.
Technical
The primary register. Used precisely to refer to specific species of Sphingidae larvae.
Watch out
Common Mistakes When Using “hornworm”
- Confusing 'hornworm' with 'cutworm' (a different type of soil-dwelling caterpillar pest).
- Using it as a general term for any caterpillar.
- Misspelling as 'horn worm' (though the open form is sometimes seen).
FAQ
Frequently Asked Questions
No, they are not poisonous or dangerous to touch. They are only a danger to plants.
They are different species. The tomato hornworm (Manduca quinquemaculata) has eight V-shaped markings and a black horn. The tobacco hornworm (Manduca sexta) has seven diagonal white lines and a red horn.
Yes, they are often sold live as premium reptile food due to their high nutritional value and soft bodies.
The posterior horn is a defensive structure meant to intimidate predators. It is not a stinger and is harmless.
A large caterpillar of a hawk moth, especially of the genus Manduca, typically having a horn-like projection on its rear end.
Hornworm is usually technical, scientific, gardening/agriculture, north american english. uncommon in general everyday speech. in register.
Hornworm: in British English it is pronounced /ˈhɔːn.wɜːm/, and in American English it is pronounced /ˈhɔːrn.wɝːm/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms exist for this technical term]”
Learning
Memory Aids
Mnemonic
Imagine a caterpillar with a small, sharp HORN on its tail, WORMing its way through your tomato plants.
Conceptual Metaphor
HUNTER/RAIDER (as in 'the hornworm raided the entire crop'). DESTROYER.
Practice
Quiz
What is a 'hornworm' primarily known as?