Senses
珪 jade tablet
an ancient jade tablet held by nobility during ceremonies such as sacrifices, funerals, or appointments to office; also used as a name for a sundial
珪 a tiny amount
(literary) an ancient unit of volume representing a very small quantity; a speck; a smidgen
珪 official rank
(literary) used to refer to a noble rank or government office, from the ancient practice of conferring a jade tablet as proof of title
珪 Gui
(surname) a personal name) a Chinese surname