Plural of baronne; multiple French baronesses or wives of French barons.
Regular French plural of baronne, formed by adding -s. French plural rules generally add -s to most nouns, similar to English.
French and English both add -s for plurals, but they arrived there differently—English from Germanic roots, French from Latin—yet they converged on the same solution, showing how language change can create accidental similarities.
Complete word intelligence in one call. Free tier — 50 lookups/day.