Meaning : A segment of the trunk of a tree when stripped of branches.
Meaning : The exponent required to produce a given number.
Synonyms : logarithm
Meaning : A written record of messages sent or received.
They kept a log of all transmission by the radio station.
An email log.
Meaning : A written record of events on a voyage (of a ship or plane).
Meaning : 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.