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Webster 1913 Edition

Noun.

A defender; a vindicator.

“Zealous propugners.”

Gov. of Tongue.

Noun.

propu'ner. A defender; a vindicator.

propugner ‎(plural propugners)

(archaic) A defender; a vindicator.
- Government of the Tongue
  Zealous propugners.

prōpugner