The Collaborative International Dictionary
Fidejussor
Fidejussor \Fi`de*jus"sor\, n. [L.: cf. F. fid['e]jusseur.]
(Civil Law)
A surety; one bound for another, conjointly with him; a
guarantor.
--Blackstone.
Wiktionary
fidejussor
n. (context legal English) A surety; one bound for another, conjointly with him; a guarantor.