The Collaborative International Dictionary of English v.0.48:
Coarsely \Coarse"ly\ (k[=o]rs"l[y^]), adv. In a coarse manner; roughly; rudely; inelegantly; uncivilly; meanly. [1913 Webster]WordNet (r) 3.0 (2006):
coarsely adv 1: in coarse pieces; "the surfaces were coarsely granular" [ant: finely]