n. Attendance of a chaperon on a lady in public; protection afforded by a chaperon. [ 1913 Webster ]

a. [ L. peronatus rough-booted, fr. pero, -onis, a kind of rough boot. ] (Bot.) A term applied to the stipes or stalks of certain fungi which are covered with a woolly substance which at length becomes powdery. Henslow. [ 1913 Webster ]

n. (Chem.) A white crystalline substance obtained by oxidation of piperic acid, and regarded as a complex aldehyde. [ 1913 Webster ]