I. -də(r) noun
Etymology: Anglo-French enterpleder, from enterpleder, v.
: a proceeding devised to enable a person of whom the same debt, duty, or thing is claimed adversely by two or more parties to compel them to litigate the right or title between themselves and thereby to relieve himself from the suits which they might otherwise bring against him
II. noun
Etymology: interplead + -er
: one that interpleads