Sheepskin

n.	1.	The skin of a sheep; or, leather prepared from it.
	2.	A diploma; - so called because usually written or printed on parchment prepared from the skin of the sheep.

Noun	1.	sheepskin - tanned skin of a sheep with the fleece left on; used for clothing Synonyms: fleece
	2.	sheepskin - skin of a sheep or goat prepared for writing on Synonyms: lambskin, parchment
	3.	sheepskin - a document certifying the successful completion of a course of study Synonyms: diploma

affidavit, attestation, authority, authorization, bill of health, certificate, certificate of proficiency, certification, credential, deposition, diploma, navicert, notarized statement, note, sworn statement, testamur, testimonial, ticket, visa, vise, voucher, warrant, warranty, witness