Entry 1 sense Webster, 1913 Erica /ĕr'-ĭk-ə/ · E·ri·ca · IPA /ˈɛrɪkə/ 01 n. A genus of shrubby plants, including the heaths, many of them producing beautiful flowers. 1. A genus of shrubby plants, including the heaths, many of them producing beautiful flowers.(Bot.)