Though \Though\ ([th][=o]), conj. [OE. thogh, [thorn]ah, AS. [eth]e['a]h, [eth][=ae]h, [eth][=e]h; akin to OS. th[=o]h, OFries. thach, D. & G. doch but, yet, OHG. doh but, yet though, Icel. [thorn][=o] yet, nevertheless, Sw. dock, Dan. dog, Goth. [thorn]['a]uh, [thorn]['a]u, than, or, yet; of uncertain origin. [root]184.]

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.

Note: It is compounded with all in although. See Although.

As though, as if.

In the vine were three branches; and it was as though it budded. --Gen. xl. 10.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Though \Though\, adv. 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. --Shak.

A good cause would do well, though. --Dryden.

Source: Webster's Revised Unabridged Dictionary (1913)