I. conjunction, adverb 1. used before the second or further of two or more alternatives (the first being introduced by a negative such as ‘neither’ or ‘not’) to indicate that they are each untrue or each do not happen • they were neither cheap nor convenient
• the sheets were never washed, nor the towels, nor his shirts.
2. [as adv.] — literary term for neither: • nor God nor demon can undo the done.
3. used to introduce a further negative statement • ‘I don’t see how.’ ‘Nor do I.’.
4. [ conjunction or prep.] —
• she thinks she knows better nor me.
II. noun — (usu. NOR) 1.
[Electronics] a Boolean operator which gives the value one if and only if all operands have a value of zero and otherwise has a value of zero.
2. (also NOR gate) —
[Electronics] a circuit which produces an output signal only when there are no signals on any of the input connections.
– origin Middle English: contraction of Old English nother ‘neither’.