Entry 1 sense Webster, 1913 Suslik · Sus·lik · IPA /ˈsʌslɪk/ 01 n. A ground squirrel (Spermophilus citillus) of Europe and Asia. It has large cheek pouches. 1. A ground squirrel (Spermophilus citillus) of Europe and Asia. It has large cheek pouches.(Zool.)