(archaic) A man who knows and tolerates his wife's infidelity with another man or men; a cuckold.
A woman who has an unfaithful husband.
A bird, the wheatear.
(transitive) To make a woman into a cuckquean.
A cuckquean is the wife of an adulterous husband (or partner for unmarried companions), and the gender-opposite of a cuckold. In evolutionary biology, the term is also applied to females who are investing parental effort in offspring that are not genetically their own.
A man who knows his wife's infidelity and submits to it; a tame cuckold; - so called because the cuckoo lays its eggs in the wittol's nest.