headbox

== English == === Etymology === From 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 ==== ==== References ==== United States Bureau of Mines, Dictionary of Mining, Mineral, and Related Terms (1996). === Anagrams === boxhead