plānus adj. with comp. and sup. PLAT-, even, level, flat, plane: litus, Cs.: planis (formis) circulus: spatia, H.: palma, flat, Iu.: carinae planiores, Cs.: unde aditus planior erat, L.: planissimus locus.

—As subst n., a plane, level, plain: Silva Incipit a plano, O.: aciem in planum deducit, S.: Collibus an plano ponere vitem, V.

—Fig., plain, clear, distinct, intelligible: narrationes: hoc testibus ita vobis planum faciemus, ut, etc.

— Easy, free from danger: via vitae.