Insect

Part of speech: noun (n.)

1. One of the Insecta; esp., one of the Hexapoda. See Insecta.

2. Any air-breathing arthropod, as a spider or scorpion.

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

4. Fig.: Any small, trivial, or contemptible person or thing. Thomson. Insect powder,a powder used for the extermination of insects; esp., the powdered flowers of certain species of Pyrethrum, a genus now merged in Chrysanthemum. Called also Persian powder.

Part of speech: adjective (a.)

1. Of or pertaining to an insect or insects.

2. Like an insect; small; mean; ephemeral.