Webster's Revised Unabridged Dictionary · 1913

Tinder

Tinder , noun

[Old English tinder, tunder, Anglo-Saxon tynder, tyndre; akin to tendan to kindle, Dutch tonder tinder, German zunder, Old High German zuntara, zuntra, Icelandic tundr, Swedish tunder, Danish tonder. See Tind.]

Something very inflammable, used for kindling fire from a spark, as scorched linen.
Collocations (2)
German tinder , Same as Amadou.
Tinder box , a box in which tinder is kept.