Definitions

from The Century Dictionary.

  • noun The segment of the posterior thorax of an insect to which the wings and two posterior pairs of legs are attached.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Zoöl.) The segment of the body of an insect to which the wings are attached; the thorax.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun zoology The segment of an insect's body to which the wings are attached; the thorax or mesosoma.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

Latin ala wing + truncus trunk.

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Examples

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