Entry 1 sense Webster, 1913 Whortleberry · Whor·tle·ber·ry · IPA /ˈwɝtl̩bɛɹi/ 01 n. In England, the fruit of Vaccinium Myrtillus; also, the plant itself. See Bilberry, 1. 1. In England, the fruit of Vaccinium Myrtillus; also, the plant itself. See Bilberry, 1.(Bot.) See: Bilberry