Webster's Revised Unabridged Dictionary · 1913

Thong

Thong , noun

[Old English thong, þwong, thwang, Anglo-Saxon þwang; akin to Icelandic þvengr a thong, latchet. r57. Compare Twinge.]

A strap of leather; especially, one used for fastening anything.
And nails for loosened spears, and thongs for shields, provide. — Dryden
Collocations (1)
Thong seal (Zoology) , the bearded seal. See the Note under Seal.