CORPORAL, see  Altar Linen.

To mount a corporal and four; to be guilty of onanism: the thumb is the corporal, the four fingers the privates.

n. A man who occupies the lowest rung of the military ladder.

  Fiercely the battle raged and, sad to tell,
  Our corporal heroically fell!
  Fame from her height looked down upon the brawl
  And said:  "He hadn't very far to fall."

Giacomo Smith