The noun log has 6 senses (first 2 from tagged texts)
1. (7) log -- (a segment of the trunk of a tree when stripped of branches)
2. (2) backlog, log -- (large log at the back of a hearth fire)
3. logarithm, log -- (the exponent required to produce a given number)
4. log -- (a written record of messages sent or received; "they kept a log of all transmission by the radio station"; "an email log")
5. log -- (a written record of events on a voyage (of a ship or plane))
6. log -- (measuring instrument that consists of a float that trails from a ship by a knotted line in order to measure the ship's speed through the water)
Overview of verb log
The verb log has 2 senses (first 2 from tagged texts)
1. (2) log -- (enter into a log, as on ships and planes)
2. (1) log, lumber -- (cut lumber, as in woods and forests)