headbox

English

Etymology

head +‎ box

Noun

headbox (plural headboxes)

Synonym of headrail
A device for distributing a suspension of solids in water to a machine at a constant rate, or for retarding the rate of flow, as to a top-feed filter, or for eliminating by overflow some of the finest particles.
The topmost square of a USPSA target holding the B and A scoring zones.

Translations

part of USPSA target

Finnish: yläneliö

References

United States Bureau of Mines, Dictionary of Mining, Mineral, and Related Terms (1996).

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