Con*cu"bi*nage (?), n.
1. The cohabiting of a man and a woman who
are not legally married; the state of being a
&fist; In some countries, concubinage is marriage of an
inferior kind, or performed with less solemnity than a true or
formal marriage; or marriage with a woman of inferior condition,
to whom the husband does not convey his rank or quality. Under
Roman law, it was the living of a man and woman in sexual
relations without marriage, but in conformity with local law.
2. (Law) A plea, in which it is
alleged that the woman suing for dower was not lawfully married
to the man in whose lands she seeks to be endowed, but that she
was his concubine.