log

1 noun (C)

1 a thick piece of wood cut from a tree

2 an official recorded or written record of something, especially a journey in a ship or plane

3 a logarithm

-see also: it's as easy as falling off a log fall 1 (30), sleep like a log/top sleep 2 (1) 2 verb logged, logging

1 (T) to make an official record of events, facts etc

2 (T) to travel a particular distance or for a particular length of time, especially in a plane or ship: The pilot has logged 1200 flying hours.

3 (I, T) to cut down trees

log in/on phrasal verb (I) to do the necessary actions on a computer system that will allow you to begin using it log off/out phrasal verb (I) to do the actions that are necessary when you finish using a computer system