Emily Dickinson Lexicon

THOUGH, v.i. [tho; Sax. theah; Goth. thauh; G. doch; Sw. dock; D. and Dan. dog. This is the imperative of a verb; Ir. daighim, to give, D. dokken.]

1. Grant; admit; allow. “If thy brother be waxen poor – thou shalt relieve him; yea, though he be a stranger.” Grant or admit the fact that he is a stranger, yet thou shalt relieve him. – Lev. xxv. Though he slay me, yet will I trust in him. – Job xiii. That is, grant or admit that he shall slay me, yet will I trust in him. Though hand join in hand, the wicked shall not be unpunished. – Prov. xi. That is, admit the fact that the wicked unite their strength, yet this will not save them from punishment. Not that I so affirm, though so it seem. – Milton. That is, grant that it seems so, yet I do not so affirm.
2. Used with as. In the vine were three branches, and it was as though it budded. – Gen. xi. So we use as if; it was as if it budded; and if is gif, give. The appearance was like the real fact, if admitted or true.
3. It is used in familiar language, at the end of a sentence. A good cause would do well though. – Dryden. This is generally or always elliptical, referring to some expression preceding or understood.
4. It is compounded with all, in although, – which see.