The difference between Log and Taffrail log
When used as nouns, log means the trunk of a dead tree, cleared of branches, whereas taffrail log means a mechanical device dragged from the stern of the vessel that indicates the vessel's speed through the water.
Log is also verb with the meaning: to cut trees into logs.
check bellow for the other definitions of Log and Taffrail log
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Log as a noun:
The trunk of a dead tree, cleared of branches.
Examples:
"They walked across the stream on a fallen log."
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Log as a noun:
Any bulky piece as cut from the above, used as timber, fuel etc.
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Log as a noun:
A unit of length equivalent to 16 feet, used for measuring timber, especially the trunk of a tree.
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Log as a noun:
Anything shaped like a log; a cylinder.
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Log as a noun (nautical):
A floating device, usually of wood, used in navigation to estimate the speed of a vessel through water.
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Log as a noun (figuratively):
A blockhead; a very stupid person.
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Log as a noun (surfing, _, slang):
A longboard.
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Log as a noun (figuratively):
A rolled cake with filling.
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Log as a noun (mining):
A weight or block near the free end of a hoisting rope to prevent it from being drawn through the sheave.
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Log as a noun (vulgar):
A piece of feces.
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Log as a verb (transitive):
To cut trees into logs.
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Log as a verb (transitive):
To cut down (trees).
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Log as a verb (intransitive):
To cut down trees in an area, harvesting and transporting the logs as wood.
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Log as a noun:
A logbook, or journal of a vessel (or aircraft)'s progress
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Log as a noun:
A chronological record of actions, performances, computer/network usage, etc.
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Log as a noun (computer science):
Specifically, an append-only sequence of records written to disk
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Log as a verb (transitive):
To make, to add an entry (or more) in a log or logbook.
Examples:
"to log the miles travelled by a ship"
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Log as a verb (transitive):
To travel (a distance) as shown in a logbook
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Log as a verb (transitive):
To travel at a specified speed, as ascertained by chip log.
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Log as a verb (obsolete):
To move to and fro; to rock.
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Log as a noun (historical, _, units of measure):
A Hebrew unit of liquid volume (about ⅓L).
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Log as a noun:
logarithm.
Examples:
"To multiply two numbers, add their logs."
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Taffrail log as a noun (nautical):
A mechanical device dragged from the stern of the vessel that indicates the vessel's speed through the water; usually consists of a propeller, a reading unit and a stiff line connecting them.