n. 1.(Astron.) the unit of length equal to the mean distance of the Earth from the sun, about 93 million miles (150 million kiometers); -- used almost exclusively in astronomy, or to describe astronomical distances. Syn. -- astronomical unit, AU, A.U. [ WordNet 1.5 ]
[ma-garetto ; magareito ; magare-to](n) (1) marguerite (Chrysanthemum frutescens); (2) Japanese women's hairstyle comprised of a long braid tied up in a loop with a ribbon (ca. 1885)#7754[Add to Longdo]