Cut off smoothly, as distinguished from erased; -- used especially for the head or limb of an animal. See Erased.

is where the head of a beast is cut off by a horizontal line, compare erased and caboshed

Cut off. If said of a body-part, it means that the charge has a smooth edge where it was separated from the rest of the body, as opposed to a jagged edge, which would be erased. If said of an ordinary, it means that the charge ends before reaching the edge of the shield, rather that extending full length.

(Cowped?) A dialect word for a sheep which has rolled on it's back and because of fleece or terrain cannot get back on it's feet.

having suffered from the effects of a (trump) coup.