Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A slender, needlelike part or structure, such as the spines or bristles of some plants and animals and the crystals of certain minerals.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal.

from the GNU version of the Collaborative International Dictionary of English

  • n. One of the needlelike or bristlelike spines or prickles of some animals and plants; also, a needlelike crystal.

from The Century Dictionary and Cyclopedia

  • n. A needle, pin, or bodkin, of wood or bone, used by Roman women as a hair-pin. It was not smaller than an acus (which see), but of inferior material.
  • n. A spine or prickle of an animal or plant. Also called acicle.
  • n. A name applied to several genera of gastropods, and retained for the representative genus of the family Aciculidæ, inhabiting Europe. A. fusca is the best-known form.
  • n. A genus of worms.
  • n. Plural of aciculum.
  • n. In botany: The bristle-like prolongation of the rachilla of a grass-spike.
  • n. A tooth-like process in the hymenium of certain fungi.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a needlelike part or structure of a plant or animal or crystal; as a spine or bristle or crystal

Etymologies

Latin, hairpin, diminutive of acus, needle; see ak- in Indo-European roots.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Latin pin for a head-dress (Wiktionary)

Examples

  • The highlight of the 2006 trip in Virginia was the discovery of the European snail Cecilioides acicula.

    Archive 2008-11-01

  • SNAIL'S TALES: Cecilioides acicula: a tiny invader from Europe skip to main

    Cecilioides acicula

  • The land snail Cecilioides acicula Family Ferussaciidae, a native of Europe, has been introduced to other parts of the world, including the U.S.

    Archive 2007-03-01

  • The banks of Aripo are not the only localities, nor is the _acicula_ the only mollusc, by which pearls are furnished.

    Sketches of the Natural History of Ceylon

  • Cecilioides acicula from Shenandoah County, Virginia, U.S.A.

    Archive 2007-03-01

  • II I. fit, quod admoto proxime ad Oculum pinnacidio, in cuiusforamine ampiiori affurgit Caput acicula*, per illud profpecranti foramen versus Corpus niuftratum, Collum &

    Optica philosophia experimentis et ratione a fundamentis constituta, Nicolai ...

  • Caput acictilse prorsiis difparent & foluni per foramen taie Corpus iine interruptione 5 aut aiicuius fiiae partis occulta - tione, vt minus illuftratura fpedatur: Profpedanu vero ver - sus Spiramen 5 quod in altero pinnacidio fit peruium radiis vkerioris Corporis iliuftrati, ftatim in medio apparet yeiut extremum acicula: capitatae, * £cd fitu inuerfo: imrab ii pro diftantia talis pinnacidij, in quo eft Spiramen, apponatur Lamella habens aperta in fe plura Spiramina. moderate in - uicem diilita, vei ciiarta craiHor, fimiliter perforata, fimul

    Optica philosophia experimentis et ratione a fundamentis constituta, Nicolai ...

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