log

Cut lumber, as in woods and forests.

Enter into a log, as on ships and planes.

The exponent required to produce a given number.

A segment of the trunk of a tree when stripped of branches.

A written record of events on a voyage (of a ship or plane).

A written record of messages sent or received.

“they kept a log of all transmission by the radio station”

“an email 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.