Decuman :: Decuman (a.) Large; chief; -- applied to an extraordinary billow, supposed by some to be every tenth in order. [R.] Also used substantively..
Decumbiture :: Decumbiture (n.) Confinement to a sick bed, or time of taking to one's bed from sickness..
Decumbiture :: Decumbiture (n.) Aspect of the heavens at the time of taking to one's sick bed, by which the prognostics of recovery or death were made..