<p><strong>Noun</strong></p><ul><li>a country lass or working girl: The milkmaid was a healthy wench.</li><li>usually facetious; a girl or young woman.</li><li>archaic; a strumpet.</li><li>a female friend or protector regarded as a sister.</li><li>a thing regarded as feminine and associated as if by kinship with something else: The ships are sisters.</li><li>a female fellow member, as of a church.</li><li>a female member of a religious community that observes the simple vows of poverty, chastity, and obedience.</li><li>British; a nurse in charge of a hospital ward; head nurse.</li><li>informal; a term used to refer to or address a fellow Black woman; soul sister.</li><li>a woman who supports, promotes, or participates in feminism.</li><li>informal; a form of address used to a woman or girl, especially jocularly or contemptuously: Listen, sister, you've had enough.</li><li>a man or boy; fellow: He's a tough baby to have to deal with.</li><li>an invention, creation, project, or the like that requires one's special attention or expertise or of which one is especially proud: His charitable foundation is his baby and it truly shows.</li><li>an object; thing: Those big babies can carry a lot of cargo.</li></ul><p><strong>Adjective</strong></p><ul><li>of, like, or befitting a sister: sisterly affection.</li></ul><p><strong>Verb</strong></p><ul><li>(used without object) to associate, especially habitually, with promiscuous women.</li></ul>