The Collaborative International Dictionary of English v.0.48:
bentgrass \bentgrass\ n. grass for pastures and lawns esp bowling and putting greens. Syn: bent, bent grass. [WordNet 1.5]WordNet (r) 3.0 (2006):
bent-grass n 1: grass for pastures and lawns especially bowling and putting greens [syn: bent, bent grass, bent-grass]