Spiracle, spir′a-kl, n. a breathing-hole: any minute passage.

What do mean by spiracles?

1 : a breathing hole : vent. 2 : a breathing orifice: such as. a : blowhole sense 2. b : an external tracheal aperture of a terrestrial arthropod that in an insect is usually one of a series of small apertures located along each side of the thorax and abdomen — see insect illustration.

Are spiracles?

Spiracles are openings or tiny pores on the surface of some animals, which usually lead to respiratory systems. In cockroach, respiration occurs through spiracles – a small opening on the sides of its body. ... The respiratory organ of the cockroach is referred to as tracheae.