(lôg, log) noun
1. A bulky piece of timber cut down and cleared of branches.
2. Figuratively, a dull, stupid person.
3. Naut. A device for showing the speed of a vessel, consisting of a triangular board, the log chip or ship, weighted on one edge and attached to a line, the log line, that runs out from a reel, the log reel, on shipboard.
4. A record of the daily progress of a vessel and of the events of a voyage.
5. Any record of performance, as of an engine, oil well, aircraft, etc.
—v. logged, log·ging v.t.
1. To cut (trees) into logs.
2. To cut down the trees of (a region) for timber.
3. Naut. a To enter in a logbook, b To travel (a specified distance) as shown by a log. c To travel at (a specified speed).
—v.i.
4. To cut down trees and transport logs for sawing into lumber. [ME logge, prob. <Scand. Cf. ON lāg, Dan. laag felled tree.]

Var. of LOGO–.