What is "schirrus"

Scirrhus \Scir"rhus\, n.; pl. L. Scirrhi, E. Scirrhuses. [NL., from L. scirros, Gr. ?, ?, fr. ?, ?, hard.] (Med.)

1. An indurated organ or part; especially, an indurated gland. [Obs.]

2. A cancerous tumor which is hard, translucent, of a gray or bluish color, and emits a creaking sound when incised. [Sometimes incorrectly written schirrus; written also skirrhus.]