flag (subs.) Copy link Outline I. A bannerII. A water plant; the sweet f.1. ăcŏrus, i, f., and ăcŏrum, n.2. călămus, Cato; c. aromaticus, Plin.III. A flat stone • flag (subs.): I. A banner: vexillum: v. standard. II. A water plant; the sweet f.: 1. ăcŏrus, i, f., and ăcŏrum, n.: Plin. 2. călămus, Cato; c. aromaticus, Plin. III. A flat stone: Phr.: f.s for paving highways, *lapides plani et ad vias muniendas idonei: v. stone.