log

1 log /ˈlɑːg/ noun
plural logs
1 log
/ˈlɑːg/
noun
plural logs
Britannica Dictionary definition of LOG
[count]
1 
a  : a long, heavy section of a tree that has fallen or been cut down
b  : a thick piece of wood
2 
a  : the record of travel by a ship or airplane
b  : a record of performance, events, or activities

as easy as falling off a log

— see 1easy

sleep like a log

— see 1sleep
2 log /ˈlɑːg/ verb
logs; logged; logging
2 log
/ˈlɑːg/
verb
logs; logged; logging
Britannica Dictionary definition of LOG
1 
: to cut down trees in an area for wood
[+ object]
[no object]
2 
[+ object] : to make an official record of (something)
3 
[+ object]
a  : to do something for (a specified distance or time)
b  chiefly US : to succeed in getting or achieving (something, such as a record of wins)

log off

[phrasal verb] computers or log out
: to end the connection of a computer to a network or system

log on

[phrasal verb] computers or log in
: to start the connection of a computer to a network or system — often + to
3 log /ˈlɑːg/ noun
plural logs
3 log
/ˈlɑːg/
noun
plural logs
Britannica Dictionary definition of LOG
[count]