either; -- used with other or or for its correlative (as either . . . or are now used).-different from that which, or the one who, has been specified; not the same; not identical; additional; second of two.-not this, but the contrary; opposite; as, the other side of a river.-alternate; second; -- used esp. in connection with every; as, every other day, that is, each alternate day, every second day.-left, as opposed to right.-otherwise.