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Definition of logbook
logbook
/ˈlɔːɡ.bʊk/
log · book
Plural:logbooks
logbook Lexical Profile
CEFR
B2
Grade
7
Tier
2
Usage
Top 10k
Syllables
2
logbook Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
An official book or ledger in which regular records of events, measurements, or operational details are entered, especially regarding the voyage of a ship or the flight of an aircraft.
Example
"The captain carefully recorded the ship's coordinates and weather conditions in the logbook at the end of every watch."
2
British An official document issued by the government that certifies the registered ownership and technical specifications of a motor vehicle.
Example
"Before purchasing the second-hand car, she asked the dealer to show her the vehicle's logbook and service history."
Synonyms
View all synonyms for logbook• Nearby Words
Word Origin & Etymology
Attested from the late 17th century, formed by compounding 'log' (originally a weighted piece of wood attached to a knotted line cast overboard to measure a ship's speed) and 'book'.
Cite this Entry
Wordmom. (2026). Definition of Logbook. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/logbook