tap-holen.
/ˈtaphəʊl/ 1. The hole in a cask, vat, or the like, in which the tap is inserted.
ΘΚΠ
the world > space > relative position > condition of being open or not closed > an opening or aperture > [noun] > bung-, plug-, or tap-hole
bung?a1560
bung-hole?a1560
tap-hole1594
plug hole1743
1594 H. Plat Jewell House 10 These halfe tubs hauing tap-holes within.
1707 J. Mortimer Whole Art Husbandry (1721) II. 322 Put it back again, stopping your Tap-hole.
2. A small opening in a furnace, through which the metal, or slag, or both, may be run out; also, a hole in a cementation furnace in which tap-bars (see tap n.1 Compounds 2) are inserted.
ΘΚΠ
society > occupation and work > equipment > furnace or kiln > furnace > parts of furnace > [noun] > openings for metal or crucible
tympa1650
working arch1824
tap-hole1825
working door1839
tapping-hole1861
slag notch1882
1825 ‘J. Nicholson’ Operative Mechanic 341 Each pot has also small openings in its end, through which the ends of two or three of the bars are left projecting in such a manner, that by only removing one loose brick from the external building, the bars can be drawn out..; these are called the tap-holes.
1839 A. Ure Dict. Arts 320 In the melting furnaces, the metal is run out by a tap-hole in the side.
1861 W. Fairbairn Iron 101 The fluid iron, as it flows from the tap-hole, is fully white hot, and perfectly limpid.
This entry has not yet been fully updated (first published 1910; most recently modified version published online December 2020).
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n.1594