Sentence:  At the tournament level I dabble/ But my tiles show a meaningless babble/ I filled up my ranks/ With a few extra blanks/ And got busted for cheating at <WSD>Scrabble</WSD> 
Meaning of the word marked with <WSD> tags:  A board game in which players draw letter tiles and take turns to make interlocking words like a crossword, scoring points according to the letters played and their positions on the board.