spiracle

noun

Save Word

spi·ra·cle | \ ˈspir-i-kəl

, ˈspī-ri- \

Definition of spiracle

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

Other Words from spiracle Example Sentences Learn More About spiracle

Examples of spiracle in a Sentence

Recent Examples on the Web Some modern-day fishes that breathe air have similarly large spiracles. — John A. Long, Scientific American, 20 May 2020 The skull of Elpistostege contains a clue: at the back of the head is a pair of large holes called spiracles. — John A. Long, Scientific American, 20 May 2020 Sturgeon have holes in their sides called spiracles, which help them breathe along with their gills. — National Geographic, 25 Feb. 2020 Also, an up-close look reveals intake vents (spiracles) behind the eyes for circulating water through the gills and out on the saw’s underside for exhaling. — David A. Brown, Field & Stream, 13 Dec. 2019 The photographs showed children touching the animal, unintentionally covering the spiracle. — Robert Newhouse, Teen Vogue, 17 Aug. 2017 When disturbed, say by a predator, these North American insects compress their bodies and squeeze air out of holes in the sides of their bodies, called spiracles. — National Geographic, 26 Apr. 2017

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'spiracle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.