संस्‍कृतशब्‍दकोशः

एकरस

एक रस वाला नाटक

a drama of one sentiment

Monier–Williams

एकरस — {rasa} m. the only pleasure, only object of affection i##(mfn.) having only one pleasure or object of affection, relishing or finding pleasure in only one thing or person iii &c##having (always) the same object of affection, unchangeable