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Definition of semitrailer
semitrailer
/ˈsɛm.aɪˌtreɪ.lɚ/
(UK: semi-trailer)
sem · i · trail · er
Plural:semitrailers
semitrailer Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Top 10k
Syllables
4
semitrailer Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A large freight trailer having wheels only at the rear, with the front end supported by the towing tractor vehicle when attached or by retractable legs when parked.
Example
"The driver carefully backed the massive semitrailer up to the warehouse loading dock."
2
North American A heavy commercial freight vehicle consisting of a towing tractor unit coupled to a semitrailer.
Example
"Heavy winter snow forced several semitrailers to pull over along the mountain highway."
Synonyms
View all synonyms for semitrailer• Nearby Words
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Semitrailer. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/semitrailer