plumb

US /plʌm/
UK /plʌm/
"plumb" picture
1.

measure (the depth of a body of water)

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The divers will plumb the depths of the ocean.
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He used a lead line to plumb the well.
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soundfathomgaugeprobeexplore
2.

understand or explore (a complex or mysterious subject) in depth

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The documentary attempts to plumb the mysteries of the universe.
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She spent years trying to plumb the depths of human psychology.
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exploredelve intoinvestigatepenetrateunravel
1.

exactly vertical or true

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The wall was built perfectly plumb.
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Make sure the post is plumb before you secure it.
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verticalperpendicularuprightstraight
1.

in a precise or exact manner; exactly

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The ball landed plumb in the center of the target.
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He hit the nail plumb on the head.
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exactlypreciselydirectlyrightsquarely
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plumbing