Sentence:  Ward, who was best known for his winning portrayal of George Bailey's Cylindul the Sun God from the Golden City of Palengue, became a staple on the <WSD>mas</WSD> circuit up until the 1990s, lending his support to the likes of Peter Minshall and others. 
Meaning of the word marked with <WSD> tags:  A type of traveling dramatic performance conducted as part of a parade celebrating Carnival, originating in Trinidad and Tobago and performed throughout the Caribbean.