1. A usually large section of a trunk or limb of a fallen or felled tree.
2. A long thick section of trimmed, unhewn timber.
3. nautical A device trailed from a ship to determine its speed through the water.
4. nautical A record of a ship's speed, its progress, and any shipboard events of navigational importance.
5. nautical the book in which this record is kept.
6. A record of a vehicle's performance, as the flight record of an aircraft.
7. A record, as of the performance of a machine or the progress of an undertaking: a computer log; a trip log.
8. to cut down, trim, and haul the timber of (a piece of land).
9. to cut (timber) into unhewn sections.
10. to enter in a record, as of a ship or an aircraft.
11. to travel (a specified distance, time, or speed): logged 30,000 air miles in april.
12. to spend or accumulate (time): had logged 25 years with the company.
13. to cut down, trim, and haul timber.
14. in to enter into a computer the information required to begin a session.
15. out to enter into a computer the command to end a session.
16. A logarithm.

1. logarithm
2. the trunk of a dead tree, cleared of branches.
3. any bulky piece as cut from the above, used as timber, fuel etc.
4. anything shaped like a log; a cylinder.
5. A floating device, usually of wood, used in navigation to estimate the speed of a vessel through water.
6. A logbook.
7. A blockhead, very dumb person.
8. A longboard.
9. A rolled cake with filling.
10. A bowel movement.
11. to cut trees into logs
12. to cut down (trees).
13. to travel at a specified speed, as ascertained by chip log
14. to cut down trees in an area, harvesting and transporting the logs as wood
15. A logbook, or journal of a vessel (or aircraft)'s progress
16. A chronological record of actions, performances, computer/network usage, etc.
17. to make, to add an entry (or more) in a log(book).
18. to travel (a distance) as shown in a logbook
19. to move to and fro; to rock.

1. A hebrew measure of liquids, containing 2.37 gills.
2. A bulky piece of wood which has not been shaped by hewing or sawing.
3. an apparatus for measuring the rate of a ship's motion through the water.
4. the record of the rate of speed of a ship or airplane, and of the course of its progress for the duration of a voyage; also, the full nautical record of a ship's cruise or voyage; a log slate; a log book.
5. A record and tabulated statement of the person(s) operating, operations performed, resources consumed, and the work done by any machine, device, or system.
6. A weight or block near the free end of a hoisting rope to prevent it from being drawn through the sheave.
7. A record of activities performed within a program, or changes in a database or file on a computer, and typically kept as a file in the computer.
8. to engage in the business of cutting or transporting logs for timber; to get out logs.
9. to move to and fro; to rock.
10. to enter in a ship's log book.
11. to record any event in a logbook, especially an event relating to the operation of a machine or device.

1. A bulky piece or stick of unhewn timber; a length of wood as cut from the trunk or a large limb of a tree; specifically, an unsplit stick of timber with butted ends ready for sawing.
2. figuratively, a dull, heavy, stolid, or stupid person.
3. constructed of logs; consisting of logs: as, a log cabin; a log fort or bridge.
4. to cut into logs.
5. to cut down trees and get out logs from the forest for sawing into boards, etc.: as, to engage in logging.
6. to record or enter in the log-book.
7. to exhibit by the indication of the log, as a rate of speed by the hour: as, the ship logs ten knots.
8. to move to and fro; rock. see logging-rock.
9. nautical, to enter in a log-book the name of a man, with his offense and the penalty attached to it; hence, to fine.
10. nautical, an apparatus for measuring the rapidity of a ship's motion.
11. hence the record of a ship's progress, or a tabulated summary of the performance of the engines and boilers, etc.; a log-book.
12. A hebrew liquid measure, the seventy-second part of a bath, or about a pint. it seems to have been of babylonian origin, being one sixtieth of a maxis.
13. the abbreviation of logarithm. thus, log. 3 = 0.4771213 is an equation giving the value of the logarithm of 3.
14. plural A jail (formerly built of logs).
15.
16. in tailoring, a document which fixes the time to be credited to journeymen for making a specified kind of garment, the men being paid nominally by the hour. N. E. D. also attributive: as, a log shop.

1. 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
2. enter into a log, as on ships and planes
3. a written record of events on a voyage (of a ship or plane)
4. a segment of the trunk of a tree when stripped of branches
5. a written record of messages sent or received
6. cut lumber, as in woods and forests
7. the exponent required to produce a given number