A relationship or bond between two female partners which is likened to that between a married couple; (in later use chiefly) a formal or symbolic marriage bond or ceremony contracted between two women, sometimes one conferring legal rights.
Origin
1930s.
Definition of lesbian marriage in US English:
lesbian marriage
noun
A relationship or bond between two female partners which is likened to that between a married couple; (in later use chiefly) a formal or symbolic marriage bond or ceremony contracted between two women, sometimes one conferring legal rights.