decuman Meaning, Definition & Usage

Dec"u*man adjective
Etymology
L. decumanus of the tenth, and by metonymy, large, fr. decem ten.
Definitions
  1. Large; chief; -- applied to an extraordinary billow, supposed by some to be every tenth in order. R. Also used substantively. "Such decuman billows." Gauden. "The baffled decuman." Lowell.

Webster 1913