1) Wool obtained from dead sheep 
• (n.) An animal, as a sheep, dead of disease or privation; a mortling. • (n.) Wool plucked from a dead sheep; morling.
Mort'ling noun [ See Morling .] 1. An animal, as a sheep, dead of disease or privation; a morling. [ Eng.] 2. Wool plucked from a dead sheep; morling. 
wool obtained from dead sheep.