Entry 2 senses · 2 variants Webster, 1913 Grossular · Gros·su·lar · IPA a. n. 01 a. Pertaining too, or resembling, a gooseberry; as, grossular garnet. 1. Pertaining too, or resembling, a gooseberry; as, grossular garnet. 02 n. A translucent garnet of a pale green color like that of the gooseberry; -- called also grossularite. 1. A translucent garnet of a pale green color like that of the gooseberry; -- called also grossularite.(Min.) Also: grossularite