~ 1
■ verb
1》 make (a hole) in something with a drill or other tool.
↘hollow out (a gun barrel or other tube).
2》 (of an athlete or racehorse) push another competitor out of the way.
■ noun the hollow part inside a gun barrel or other tube.
↘the diameter of this: a small-~ rifle.
Origin
OE borian (v.), of Gmc origin.
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~ 2
■ noun a dull and uninteresting person or activity.
■ verb cause (someone) to feel weary and uninterested by being dull and tedious.
Origin
C18: of unknown origin.
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~ 3
■ noun a steep-fronted wave caused by the meeting of two tides or by a tide rushing up a narrow estuary.
Origin
C17: perh. from ON bára 'wave'.
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~ 4
past of bear 1 .