The Collaborative International Dictionary
Maintainor
Maintainor \Main*tain"or\, n. [OF. mainteneor, F. mainteneur.]
(Crim. Law)
One who, not being interested, maintains a cause depending
between others, by furnishing money, etc., to either party.
--Bouvier.
--Wharton.
Wiktionary
maintainor
n. (context legal English) One who, not being an interested party, maintains a cause depending between others, by furnishing money, etc., to either party.