spiracle /spīˈrə-kl/

1. A breathing hole (zoology)
2. A vent, orifice, passage (geology)

spīracular /-akˈū-lər/ adjective

spīracˈulate adjective

spīracˈulum noun (pl spīracˈula)

• orthodontist
• orthodontists
• orthodox
• Orthodox Church
• Orthodox Churches
• Orthodox Eastern Church
• orthodoxies
• orthodoxly
• orthodoxy
• orthodromic
• orthodromics
• orthodromies
• orthodromy
• orthoepic
• orthoepical
• orthoepies
• orthoepist
• orthoepists
• orthoepy
• orthogeneses
• orthogenesis
• orthogenesist
• orthogenesists
• orthogenetic
• orthogenetically