a. Obs. [f. CRUST v. + -IVE.] Producing a ‘crust’ or eschar, escharotic.
1607. Topsell, Four-f. Beasts, 429. Medicines … called ‘Escharotica,’ that is to say crustive: which be hot in the fourth degree, and do breed a crust and scarre.
1610. Markham, Masterp., II. clvi. 461. Medicines to be crustiue.
