SPURIOUS a.
Not legitimate; bastard; as, spurious issue. "Her spurious firstborn." Milton. Spurious primary, or Spurious quill (Zoöl.), the first, or outer, primary quill when rudimentary or much reduced in size, as in certain singing birds. -- Spurious wing (Zoöl.), the bastard wing, or alula.
STAMP n. 2 definitions
Hence, a stamped or printed device, issued by the government at a fixed price, and required by law to be affixed to, or stamped on, certain papers, as evidence that the government dues are paid; as, a postage stamp; a receipt stamp, etc.