(used in negative phrases, esp. after neither, to introduce the second member in a series, or any subsequent member)

Neither he nor I will be there. They won't wait for you, nor for me, nor for anybody.

(used to continue the force of a negative, as not, no, never, etc., occurring in a preceding clause)

He left and I never saw him again, nor did I regret it.

(used after an affirmative clause, or as a continuative, in the sense of and not )

They are happy, nor need we worry.

Older Use . than.

Archaic . (used without a preceding neither, the negative force of which is understood)

He nor I was there.

Archaic . (used instead of neither as correlative to a following nor )

Nor he nor I was there.