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fore-heater
fore-heater n.
Brit. 
/ˈfɔːˌhiːtə/
, /ˈfɔːˌhiːtə/U.S. /ˈfɔrˌhidər/
Salt-making (see quot.)./ˈfɔrˌhidər/ΘΚΠ
the world > food and drink > food > food manufacture and preparation > salt manufacture > [noun] > equipment
pail1481
walling-lead1611
walma1661
Neptune1662
loot1669
ship1669
clearerc1682
cribc1682
barrow1686
hovel1686
leach-trough1686
salt-pan1708
sun pond1708
sun pan1724
scrape-pan1746
taplin1748
drab1753
room1809
thorn house1853
thorn-wall1853
fore-heater1880
pike1884
trunk1885
1880 Lib. Univ. Knowl. XIII. 76 The brine..is placed in large shallow iron pans called the ‘foreheaters’, when it is boiled until the impurities have been deposited.
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as lemmas