Not either; generally used to introduce the first of two or more coördinate clauses of which those that follow begin with
nor. [
1913 Webster]
"
Neither was formerly often used where we now use nor. “For neither circumcision, neither uncircumcision is anything at all.” Tyndale. “Ye shall not eat of it, neither shall ye touch it.” Gen. iii. 3. Neither is sometimes used colloquially at the end of a clause to enforce a foregoing negative (nor, not, no). “He is very tall, but not too tall neither.” Addison. ” ‘I care not for his thrust' ‘No, nor I neither.'” Shak."
[
1913 Webster]
"Fight neither with small nor great, save only with the king."
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"Hadst thou been firm and fixed in thy dissent,
Neither had I transgressed, nor thou with me."
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"When she put it on, she made me vow
That I should neither sell, nor give, nor lose it."
[1913 Webster]