Maintainor
Defined in 3 dictionaries — Ballentine's (1916), Black's (1910), Kinney (1893)
Ballentine's Law Dictionary
James A. Ballentine · 1916
One guilty of maintenance.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
In criminal law. One that maintains or seconds a cause depending in suit between others, either by disbursing money or making friends for either party towards his help. Blount. One who is guilty of maintenance (q. v.)
A Law Dictionary and Glossary
George C. Kinney · 1893
One that maintains or seconds a cause depending in suit between others; a person guilty of maintenance.