The Oxford Thesaurus An A-Z Dictionary of Synonyms - rashэ n.

1) eruption, eczema, redness, efflorescence, dermatitis: One of the symptoms of measles is a skin rash. 2) number(s) , quantity, lot(s) , multitude, profusion, outbreak, series, succession, spate, wave, flood, deluge, plague, epidemic: There's been a rash of burglaries in the neighbourhood.