nailless,a.|ˈneɪllɪs| [f. nail n. + -less.] Destitute of nails; not provided with, or protected by, nails. 1847National Encycl. I. 884 The thumbs were nailless.1896Daily News 24 Oct. 8/3 A pattern of the nailless horseshoe now under trial in..the German Army.