Insect

n. member of a group of very small invertebrate animals having segmented bodies and three pairs of legs, bug; very small animal which resembles an insect (i.e. spider); unimportant person

[Image:robal.png|right|300px|thumb|Insect anatomy A- Head B- Thorax C- Abdomen 1. antenna 2. ocelli (lower) 3. ocelli (upper) 4. compound eye 5. brain (cerebral ganglia) 6. prothorax 7. dorsal blood vessel 8. tracheal tubes (trunk with spiracle) 9. mesothorax 10. metathorax 11. forewing 12. hindwing 13. mid-gut (stomach) 14. dorsal blood vessel ("aorta") 15. ovary 16. hind-gut (intestine, rectum & anus) 17. anus 18. vagina 19. nerve chord (abdominal ganglia) 20. Malpighian tubes 21. tarsal pads 22. claws 23. tarsus 24. tibia 25. femur 26. trochanter 27. fore-gut (crop, gizzard) 28. thoracic ganglion 29. coxa 30. salivary gland 31. subesophageal ganglion 32. mouthparts]]
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Noun
1. small air-breathing arthropod
(hypernym) arthropod
(hyponym) ephemera, ephemeron
(member-holonym) Arthropoda, phylum Arthropoda
(part-meronym) clypeus
(class) holometabolism, holometaboly
2. a person who has a nasty or unethical character undeserving of respect
(synonym) worm, louse, dirt ball
(hypernym) unpleasant person, disagreeable person

n. (old spell.>insekt) insect, bug, member of a group of very small invertebrate animals having segmented bodies and three pairs of legs

(n.)
One of the Insecta; esp., one of the Hexapoda. See Insecta.
  

(n.)
Fig.: Any small, trivial, or contemptible person or thing.
  

(n.)
Any small crustacean. In a wider sense, the word is often loosely applied to various small invertebrates.
  

(n.)
Any air-breathing arthropod, as a spider or scorpion.
  

(a.)
Of or pertaining to an insect or insects.
  

(a.)
Like an insect; small; mean; ephemeral.