log
noun /lɒɡ/
/lɔːɡ/
Idioms 
enlarge imagea thick piece of wood that is cut from or has fallen from a tree- logs for the fire
Extra Examples- The road was blocked by fallen logs.
- They haul the logs into the sawmill.
- a pile of sawn logs
- logs crackling in the fireplace
Oxford Collocations Dictionaryadjective- cut
- sawn
- fallen
- …
- chop
- saw
- split
- …
- blaze
- burn
- crackle
- …
- cabin
- house
- fire
- …
- (also logbook)an official record of events during a particular period of time, especially a journey on a ship or plane
- The captain keeps a log.
Extra ExamplesTopics Transport by waterc1, Transport by airc1- They keep a log of any accidents that occur at work.
- She kept a log of their voyage.
- A senior officer made a note in the ship's log.
- The captain's log stopped abruptly in May 1944.
Oxford Collocations Dictionaryadjective- detailed
- daily
- captain’s
- …
- keep
- maintain
- update
- …
- book
- sheet
- entry
- …
- a written or digital record of activity on a computer or phone line
- I checked the server's error logs.
- The lawyers will review phone logs and other records.
- (informal, mathematics) a logarithm (= any of a series of numbers set out in lists that make it possible to work out problems by adding and subtracting instead of multiplying and dividing)
Word Originnoun senses 1 to 2 Middle English (in the sense ‘bulky mass of wood’): of unknown origin; perhaps symbolic of the notion of heaviness.
Idioms
as easy as anything/as pie/as ABC/as falling off a log
- (informal) very easy or very easily
- The whole procedure is as easy as ABC.
- Fooling him was as easy as falling off a log.
sleep like a log/baby
- (informal) to sleep very well
- He was so tired after all his exertions, he slept like a baby.
- I usually sleep like a log.