The Collaborative International Dictionary
hard chancre
Chancre \Chan"cre\, n. [F. chancere. See Cancer.] (Med.) A venereal sore or ulcer; specifically, the initial lesion of true syphilis, whether forming a distinct ulcer or not; -- called also hard chancre, indurated chancre, and Hunterian chancre.
Soft chancre. A chancroid. See Chancroid.