Decuman a. : Large; chief; -- applied to an extraordinary billow, supposed by some to be every tenth in order. [R.] Also used substantively.

Example:
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Taxonomy
the church, Saint Decuman, Watchet, church, free encyclopedia, Williton, perpendicular, legend, south Wales, cow, companion, Ancient Parish, the saint, rebuilt, 13th century, isle, the Celtic saints, cult.

Defination from the web:
Decuman was one of the Celtic saints who came to Somerset from South Wales during the 7th century, arriving on a raft (or his cloak) with a ... Retrieved from "http://en.wikipedia.org/wiki/Decuman" ...