a. [ad. L. crustāt-us crusted, incrusted; applied by Pliny to crustacea.] Crusted; crustaceous.
1661. Lovell, Hist. Anim. & Min., Introd. Exanguine aquaticks, which are either soft, as the Polypus … or Crustate … as the Lobster.
1882. Syd. Soc. Lex., Crustate, having an outer hard rind or shell.
