1. (

• log ,

) a segment of the trunk of a tree when stripped of branches ;

2. (

• logarithm ,
• log ,

) the exponent required to produce a given number ;

3. (

• log ,

) a written record of messages sent or received; "they kept a log of all transmission by the radio station"; "an email log" ;

4. (

• log

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

5. (

• 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 ;

1. (

• log

) enter into a log, as on ships and planes ;

2. (

• log ,
• lumber

) cut lumber, as in woods and forests ;