Spū'ri-ous, a.
a. [Lat. spurius, It. spurio, Sp. espurio.]
Sense 1. Not proceeding from the true source, or from the source pretended; not genuine; counterfeit; false; adulterate.
Sense 2. Not legitimate; bastard; as, spurious issue. “Her spurious first-born.” Milton.
Spurious disease (Med.), a disease commonly mistaken for, and called by the name of, something which it is not; as, spurious pleurisy, that is, rheumatism of the intercostal muscles.—Spurious wing (Ornith.), three or five quill-like feathers at a small joint rising at the middle part of the wing. Swainson.
Synonyms—Counterfeit; false; adulterate; supposititious; fictitious; bastard.