Spunk.
Mid 16th century (in the sense ‘a spark, vestige’): of unknown origin; perhaps a blend of spark and obsolete funk ‘spark’.
Spunk means “spark” and “touchwood.” Touchwood is what becomes of wood when certain fungi convert it into a soft mass; once ignited, it can burn for hours like tinder. Touchwood is defined in dictionaries by means of its synonym tinder. “Spark” and “flammable substance” are compatible senses. Spunk “spirit, mettle” can be understood as a figurative extension of “tinder.”
The noun funk has been recorded with the following senses: “spark; touchwood (the same as spunk),” “strong smoky smell, especially tobacco smell,” “kick, stroke; anger,” and “fear, panic” (for example, to be in a blue funk). The etymology of each of these senses is problematic, and there can be no certainty that any one of them is connected with any other.
touchwood, tinder, or punk.
ORIGIN OF SPUNK
1530–40; blend of spark1 and obsolete funk spark, touchwood (cognate with Dutch vonk, German Funke)
Definition of spunk
(Entry 1 of 2)
1a: a woody tinder : PUNK
b: any of various fungi used to make tinder
History and Etymology for spunk
Noun
Scottish Gaelic spong sponge, tinder, from Middle Irish spongc, from Latin spongia sponge
spunk (n.)
1530s, "a spark," Scottish, from Gaelic spong "tinder, pith, sponge," from Latin spongia (see sponge (n.)). The sense of "courage, pluck, mettle" is first attested 1773. A similar sense evolution took place in cognate Irish sponnc "sponge, tinder, spark; courage, spunk."
NOUN: A piece of tinder, sometimes impregnated with sulphur; a match. spunk (n.) ... Sponk: A word used in Edinburgh which denotes a match or anything dipped in sulphur that takes fire.
This wooden box for 'spunks' or sulphur matches dates from the early 19th century. It was turned out on a lathe at Kirkpatrick-Durham in Kirkcudbrightshire.
The box is in the form of a barrel which unscrews two-thirds of the way up. It has the initials R.I. (for Robert Innes) on the bottom.
Sulphur matches or 'spunks' have a long history, and may have been used by the Romans. Chemical methods of making fire were developed in the late 18th century and in the 1830s the first phosphorous matches - 'Congreves' - were introduced.
Spunk-fencer. The Slang Dictionary of 1865, it’s a match seller, “spunks” also being the term for lucifer matches. Lucifers...
NOUN: A piece of tinder, sometimes impregnated with sulphur; a match. spunk (n.) ... Sponk: A word used in Edinburgh which denotes a match or anything dipped in sulphur that takes fire.
Tinder, touchwood, as a means of raising fire from a spark (Sc. 1721 Ramsay Poems (S.T.S.) I. Gl.), also in Eng.; later, a sliver of wood dipped in a preparation of sulphur and used for the same purpose (Sc. 1782 J. Sinclair Ob. Sc. Dial. 128; s.Sc. 1802 J. Sibbald Chron. Sc. Poetry Gl.).
by extension: a tiny, poor, miserable fire, also in phr. a spunk of fire, id. (s.Sc. 1802 J. Sibbald Chron. Sc. Poetry Gl.; ne.Sc. 1971). Comb. spunk-hole, a fireplace (Abd. 1921).Ayr. 1786 Burns Ordination xiv.:
We'll light a spunk, and ev'ry skin, We'll rin them aff in fusion.
fig. the least particle or vestige, gen. of some moral quality (I., n.Sc., Per. 1971).Sc. 1702 R. Wodrow Early Letters (S.H.S.) 193:
Its evident hou useful your desing may be to these that have any spunk of love to Christianity.Sc. 1724 Ramsay Poems (S.T.S.) III. 82:
Ilk Creature . . . That had a Spunk of Sence.
spunk n.
[? fig. use of Scot./dial. spunk, a spark]
spunk-faker (n.) [faker n. (5)]
(US) an ostensible match-seller, whose outwardly respectable, if impoverished profession often hides less reputable, and usu. fraudulent, pursuits.
Keith.