n a segment of the trunk of a tree when stripped of branches
n the exponent required to produce a given number
n a written record of messages sent or received
n a written record of events on a voyage (of a ship or plane)
n 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
v enter into a log, as on ships and planes
v cut lumber, as in woods and forests