What is the meaning of Insect?

An arthropod (in the Insecta class) characterized by six legs, up to four wings, and a chitinous exoskeleton.

Any small arthropod similar to an insect, including spiders, centipedes, millipedes, etc.

insect, arthropod of the class Insecta.

bug (any small arthropod or invertebrate that somewhat resembles an insect)

Source: wiktionary.org

See also