Webster 1913 Edition
Not proceeding from the true source, or from the source pretended; not genuine; counterfeit; false; adulterate.
Not legitimate; bastard;“Her spurious firstborn.”
Spurious primary, or
the first, or outer, primary quill when rudimentary or much reduced in size, as in certain singing birds.–
the bastard wing, or alula.
Syn. – Counterfeit; false; adulterate; supposititious; fictitious; bastard.–
Webster 1828 Edition
1.Not genuine; not proceeding from the true source, or from the source pretended; counterfeit; false; adulterate. Spurious writings are such as are not composed by the authors to whom they are ascribed. Spurious drugs are common. The reformed churches reject spurious ceremonies and traditions.
2.Not legitimate; bastard; as spurious issue. By the laws of England, one begotten and born out of lawful matrimony, is a spurious child.
Spurious disease, a disease not of the genuine type, but bearing a resemblance in its symptoms.