D defs.my
Entry 1 sense Webster, 1913

Acorn-shell

· A·corn-shell · IPA
01 n. One of the sessile cirripeds; a barnacle of the genus Balanus. See Barnacle.
  1. 1.
    One of the sessile cirripeds; a barnacle of the genus Balanus. See Barnacle.(Zool.) See: Barnacle