juncular

/ˈdʒʌŋkjʊlə/

noun

A breathing apparatus or tube, specifically the tubular component of a snorkel that allows air to pass between the mouthpiece and the surface of the water.

"The juncular of his snorkel was perfectly positioned above the water's surface, allowing him to breathe comfortably while observing the marine life below."

Origin: Early 21st century; from Latin iuncus (reed, tube) + -ular (relating to), referring to the tubular nature of the breathing apparatus and the 'J' structure of the tube.