[plʌm], (Verb)

Definitions:
- measure (the depth of a body of water)
(e.g: I plumbed the depth and found the bottom of the shelf to be seven metres down)

- test (an upright surface) to determine the vertical
(e.g: they are valuable aids in plumbing the frames and keeping the side of the ship fair)


Phrases:
- out of plumb

Origin:
Middle English (originally in the sense ‘sounding lead’): via Old French from Latin plumbum ‘lead’

[plʌm], (Noun)

Definitions:
- a ball of lead or other heavy object attached to the end of a line for finding the depth of water or determining the vertical on an upright surface


Phrases:
- out of plumb

Origin:
Middle English (originally in the sense ‘sounding lead’): via Old French from Latin plumbum ‘lead’

[plʌm], (Adverb)

Definitions:
- exactly
(e.g: trading opportunities plumb in the centre of central Europe)

- vertically
(e.g: drapery fell from their human forms plumb down)


Phrases:
- out of plumb

Origin:
Middle English (originally in the sense ‘sounding lead’): via Old French from Latin plumbum ‘lead’

[plʌm], (Adjective)

Definitions:
- vertical
(e.g: ensure that the skirting is straight and plumb)


Phrases:
- out of plumb

Origin:
Middle English (originally in the sense ‘sounding lead’): via Old French from Latin plumbum ‘lead’

[plʌm], (Verb)

Definitions:
- install an appliance such as a bath, toilet, or washing machine and connect to water and drainage pipes
(e.g: he had plumbed in a second-hand washing machine)


Phrases:

Origin:
late 19th century (in the sense ‘work as a plumber’): back-formation from plumber