Biol. eating only a limited variety of foodsFeeding on a limited number of foods, often within one taxonomic genus.- (ecology) Feeding on a limited variety of food. Ancient Greek ÏƒÏ„ÎµÎ½ÏŒÏ‚ (stenÃ³s, “narrow, limited") + Ï†Î±Î³Îµá¿–Î½ (phagein, “to eat").