Obs. rare1. [see -ESS, and cf. OF. compaignesse.] A female companion.
1691. Ed. Taylor, trans. Behmens Theos. Philos., 332. And so [Faith] is the Companionness or Play-fellow of Sophia, the Wisdom of God.
1830. W. Taylor, Germ. Poetry, III. 134. Baron Wildenhain had seduced and abandoned the companioness of his mother.