Real Dictionary

-bore
-bore combines with numbers to form adjectives which indicate the size of the barrel of a gun.

bore
countable noun: You describe someone as a bore when you think that they talk in a very uninteresting way.
singular noun: You can describe a situation as a bore when you find it annoying.
verb: If someone or something bores you, you find them dull and uninteresting.

bore in American English 1
to bore a hole or passage
to make a hole in or through with a drill or other rotating tool
intransitive verb: to make a hole in a solid substance with a rotary cutting instrument
noun: a hole made or enlarged by boring
transitive verb: to pierce (a solid substance) with some rotary cutting instrument

bore in American English 2
a high wall of moving water caused by a very rapid rise of the tide in shallow, narrow channels
noun: a dull, tiresome, or uncongenial person
transitive verb: to weary by dullness, tedious repetition, unwelcome attentions, etc.

bore in American English 3
bear1
noun: an abrupt rise of tidal water moving rapidly inland from the mouth of an estuary

bore in American English 4
verb

bore in Automotive Engineering 1
noun: The bore is the internal diameter of the cylinder of an engine or pump.

bore in Automotive Engineering 2
noun: The bore is the cylinder wall of an engine.

bore in Automotive Engineering 3
verb: If you bore a hole in something, you make a deep round hole in it using a special tool.

bore in Automotive Engineering 4
verb: If you bore a cylinder in an engine, you increase the size of the cylinder bore to accept the piston, and so increase displacement.

bore in British English 1
noun: a hole or tunnel in the ground, esp one drilled in search of minerals, oil, etc
verb: to produce (a hole) in (a material) by use of a drill, auger, or other cutting tool

bore in British English 2
noun: a dull, repetitious, or uninteresting person, activity, or state
verb: to tire or make weary by being dull, repetitious, or uninteresting

bore in British English 3
noun: a high steep-fronted wave moving up a narrow estuary, caused by the tide

bore in British English 4
verb

bore in Mechanical Engineering
noun: A bore is a circular hole in a material produced by drilling, turning, or drawing.