[sledge.ham.mer] n (15c): a large heavy hammer that is wielded with both hands; also: something that resembles a sledgehammer in action
[2]sledgehammer vt (1834): to strike with or as if with a sledgehammer ~ vi: to strike blows with or as if with a sledgehammer [3]sledgehammer adj (1843): marked by heavy-handed directness or hard-hitting force "trusting in ~ warfare --C. J. Rolo"