skin (n.) Look up skin at Dictionary.com
c.1200, "animal hide" (usually dressed and tanned), from O.N. skinn "animal hide," from P.Gmc. *skintha- (cf. O.H.G. scinten, Ger. schinden "to flay, skin;" Ger. dial. schind "skin of a fruit," Flem. schinde "bark"), from PIE *sken- "cut off" (cf. Bret. scant "scale of a fish," Ir. scainim "I tear, I burst"), from base *sek- "cut." Replaced native hide; the modern technical distinction between the two words is based on the size of the animal. Meaning "epidermis of a living animal or person" is attested from 1340; extended to fruits, vegetables, etc. 1398.
"Ful of fleissche Y was to fele, Now ... Me is lefte But skyn & boon." [hymn, c.1430]
Jazz slang sense of "drum" is from 1927. As an adj., it formerly had a slang sense of "cheating" (1868); sense of "pornographic" is attested from 1968. The verb is attested from 1392, from the noun. Skin-tight is from 1885; skin deep is first attested 1613 in this:
"All the carnall beauty of my wife, Is but skin-deep." [Sir Thomas Overbury, "A Wife," 1613; the poem was a main motive for his murder]