Webster's Revised Unabridged Dictionary · 1913

Though

Though (tō) , conjunction

[Old English thogh, þah, Anglo-Saxon eeáh, eah, eēh; akin to Old Saxon thōh, OFries. thach, Dutch & German doch but, yet, Old High German doh but, yet though, Icelandic þō yet, nevertheless, Swedish dock, Danish dog, Gothic þáuh, þáu, than, or, yet; of uncertain origin. r184.]

Granting, admitting, or supposing that; notwithstanding that; if.
Though he slay me, yet will I trust in him. — Job xiii. 15
Not that I so affirm, though so it seem. — Milton
In the vine were three branches; and it was as though it budded. — Gen. xl. 10

It is compounded with all in although. See Although.

Collocations (1)
As though , as if.

Though , adverb

However; nevertheless; notwithstanding; -- used in familiar language, and in the middle or at the end of a sentence.
I would not be as sick though for his place. — Shakespeare
A good cause would do well, though. — Dryden