Lewis & Short

eclīgma, ătis, n., = ἔκλειγμα, a medicine to be taken by letting it melt in the mouth, an electuary, Plin. 21, 21, 89, § 154; 24, 7, 23, § 38; 26, 8, 35, § 110.
Hence, ecligmătĭum, ii, dim. n., Theod. Prisc. 2, 17.