From The Collaborative International Dictionary of English v.0.48:
Contuse \Con*tuse"\ (k[o^]n*t[=u]z"), v. t. [imp. & p. p.
Contused (k[o^]n*t[=u]zd"); p. pr. & vb. n. Contusing.]
[L. contusus, p. p. of contundere to beat, crush; con- +
tundere to beat, akin to Skr. tud (for stud) to strike, Goth.
stautan. See Stutter.]
1. To beat, pound, or bray together.
[1913 Webster]
Roots, barks, and seeds contused together. --Bacon.
[1913 Webster]
2. To bruise; to injure or disorganize a part without
breaking the skin.
[1913 Webster]
Contused wound, a wound attended with bruising.
[1913 Webster] contused