
1) Cask 2) Materials 3) Perforator
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https://www.crosswordclues.com/clue/puncheon

1) French word used in English 2) Unit of volume 3) Wine terminology
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https://www.crosswordclues.com/clue/puncheon

pit prop (Ja, 302)
Found on
http://info.sjc.ox.ac.uk/forests/glossary.htm

tool for punching or stamping
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http://phrontistery.info/p.html

• (n.) A figured stamp, die, or punch, used by goldsmiths, cutlers, etc. • (n.) A split log or heavy slab with the face smoothed; as, a floor made of puncheons. • (n.) A cask containing, sometimes 84, sometimes 120, gallons. • (n.) A short, upright piece of timber in framing; a short post; an intermediate stud.Puncheon: words in...
Found on
http://thinkexist.com/dictionary/meaning/puncheon/
(Bog Bridge) A log or timber structure built on the ground for the purpose of crossing a boggy area. Usually consists of sills, stringers, decking, and often a soil or loose gravel tread laid on top of the decking.
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http://www.americantrails.org/

A wine barrel that holds approximately 84 U.S. gallons (318 litres) .
Found on
http://www.encyclo.co.uk/local/20673

pit prop (Ja, 302)
Found on
http://www.encyclo.co.uk/local/22223

Punch'eon noun [ French poinçon awl, bodkin, crown, king-post, from Latin punctio a pricking, from pungere to prick. See Pungent , and confer Punch a tool, Punction .] 1. A figured stamp, die, or punch, used by goldsmiths, cutlers, etc. 2.
Found on
http://www.encyclo.co.uk/webster/P/195

A puncheon was a liquid measure of capacity containing from 84 to 120 gallons. In beer it was equal to one and a third hogsheads, or seven firkins.
Found on
http://www.probertencyclopaedia.com/browse/AP.HTM

In architecture, a puncheon is any vertical scaffold tube used in the erection of tubular scaffolding, which is not supported upon the ground or upon a base plate.
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http://www.probertencyclopaedia.com/browse/TP.HTM

A wine barrel that holds approximately 84 U.S
Found on
https://en.wikipedia.org/wiki/Glossary_of_wine_terms

Name (also Punchion or Pencheon) for an Anglo-American measure or barrel type, also called Firkin (barrel) or Tertian. The designation is derived from the inspection of the barrels, which was confirmed by a punch in the barrel wall. Depending on the use(beer, wine, liquor, others) the volumes were quite different and also changed over time. Si...
Found on
https://glossary.wein.plus/puncheon

a large cask of varying capacity, but usually 80 gallons (304 l). · the volume of such a cask, used as a measure.
Found on
https://www.infoplease.com/dictionary/puncheon

These large casks, approximately 500 litres, are used in the sherry and rum industries and often used to finish off whisky.
Found on
https://www.thewhiskyvault.com/glossary-of-terms-202-c.asp

Cask with about 600 litres capacity.
Found on
https://www.whisky.com/information/knowledge/about-whisky/whisky-glossary.h
No exact match found.