Insect definition

Any of a large class (Insecta) of small arthropod animals, including beetles, bees, flies, wasps, and mosquitoes, characterized in the adult state by division of the body into head, thorax, and abdomen, by three pairs of legs on the thorax, and, usually, by two pairs of membranous wings.

(popularly) Any small arthropod, usually wingless, including spiders, centipedes, pill bugs, and mites.

Any of very numerous, mostly small arthropods of the class Insecta, having six segmented legs in the adult stage and a body divided into three parts (the head, thorax, and abdomen). The head has a pair of antennae and the thorax usually has one or two pairs of wings. Most insects undergo substantial change in form during development from the young to the adult stage. More than 800,000 species are known, most of them beetles. Other insects include flies, bees, ants, grasshoppers, butterflies, cockroaches, aphids, and silverfish.

An unimportant or contemptible person.

The definition of an insect is a bug- a small anthropoid with six legs and, sometimes, wings.

An insignificant or contemptible person.

Any of numerous arthropod animals of the class Insecta, having an adult stage characterized by three pairs of legs and a body segmented into head, thorax, and abdomen and usually having one or two pairs of wings. Insects include the flies, crickets, mosquitoes, beetles, butterflies, and bees.

Any of various other small, chiefly arthropod animals, such as spiders, centipedes, or ticks, usually having many legs. Not in scientific use.

Any of numerous arthropod animals of the class Insecta, having an adult stage characterized by three pairs of legs and a body segmented into head, thorax, and abdomen and usually having one or two pairs of wings. Insects include the flies, crickets, mosquitoes, beetles, butterflies, and bees.

Any of various other small, chiefly arthropod animals, such as spiders, centipedes, or ticks, usually having many legs. Not in scientific use.