The term 'Bleachers Sound' refers to the collective noise made by people in the bleachers of a sporting event. The crossword solutions for this term are RAH (3 letters), BOO (3 letters), ROAR (4 letters), CHANT (5 letters), WAVE (4 letters), VEND (4 letters), and TIER (4 letters). RAH is an expression of enthusiasm, BOO is an expression of disapproval, ROAR is a loud, deep sound, CHANT is a rhythmic repetition of words or phrases, WAVE is a gesture of greeting or farewell, VEND is to sell something, and TIER is a row of seats in a stadium. All of these words together describe the sound of a crowd in the bleachers of a sporting event.