‖n.; pl. Lacerti [ L., the upper arm. ] (Anat.) A bundle or fascicle of muscular fibers. [ 1913 Webster ]

n. [ L. a lizard. See Lizard. ] 1. (Zool.) A genus of lizards. See Lizard. [ 1913 Webster ]

☞ Formerly it included nearly all the known lizards. It is now restricted to certain diurnal Old World species, like the green lizard (Lacerta viridis) and the sand lizard (Lacerta agilis), of Europe. [ 1913 Webster ]

2. (Astron.) The Lizard, a northern constellation. [ 1913 Webster ]

n. [ L. lacertus the arm. ] A fathom. [ Obs. ] Domesday Book. [ 1913 Webster ]