plumming

English

Verb

plumming

present participle and gerund of plum

Noun

plumming (uncountable)

(mining) The operation of finding, by means of a mine dial (compass), the place where to sink an air shaft, or to bring an adit to the work, or to find which way the lode inclines.
(photography) A plum-colored distortion of prints.

References

“plumming”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

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