from The Century Dictionary.
- noun The shell of the acorn.
- noun One of the cirripeds of the genus Balanus; a barnacle: called by this name from a supposed resemblance of some of the species to acorns. See
from the GNU version of the Collaborative International Dictionary of English.
- noun (Zoöl.) One of the sessile cirripeds; a barnacle of the genus Balanus. See
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun zoology One of the
sessile cirripeds; a barnacle of the genus Balanus.
Sorry, no etymologies found.
In an acorn-shell, if the training data spans the REAL range of data in the periods of interest, it should be as good at capturing internal multivariate projective variation as anything.
Down came spiralling a few bits of bark and acorn-shell, quite in the old familiar way.
But not less important is the fact that the open waters afford a safe cradle or nursery for many a delicate larva, e.g. of crab and starfish, acorn-shell and sea-urchin, which could not survive for a day in the rough-and-tumble conditions of the shore and the shallow water.