1. The latter part and close of the day, and the beginning of darkness or night; properly, the decline of the day, or of the sum. In the ascending scale Of heaven, the stars that usher evening rose. (Milton)
(Science: botany) evening flower, an American singing bird (Coccothraustes vespertina) having a very large bill. Its colour is olivaceous, with the crown, wings, and tail black, and the under tail coverts yellow. So called because it sings in the evening. Evening primrose. See primrose. The evening star, the bright star of early evening in the western sky, soon passing below the horizon; specifically, the planet Venus; called also Vesper and Hesperus. During portions of the year, mars, jupiter, and saturn are also evening stars. See morning star.