any of numerous black, red, brown, or yellow social insects of the family Formicidae, of worldwide distribution esp. in warm climates, having a large head with inner jaws for chewing and outer jaws for carrying and digging, and living in highly organized colonies containing wingless female workers, a winged queen, and, during breeding seasons, winged males, some species being noted for engaging in warfare, slavemaking, or the cultivation of food sources. ?

have ants in one's pants

Slang . to be impatient or eager to act or speak.

noun

amazon , carpenter , driver , emmet , formican , pismire , soldier , termite , termite (white ant)