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}. [1913 Webster] {Soft chancre}. A chancroid. See {Chancroid}. [1913 Webster]
Chancroid \Chan"croid\, n. [Chancre + -oil.] (Med.) A venereal sore, resembling a chancre in its seat and some external characters, but differing from it in being the starting point of a purely local process and never of a systemic disease; -- called also {soft chancre}. [1913 Webster]