What is the meaning of Obstruent?

Causing obstruction; blocking up.

A consonant sound formed by obstructing the airway, causing turbulence; a plosive, fricative, or affricate.

Anything that obstructs, especially in the passages of the body.

third-person plural present indicative/subjunctive of obstruer

third-person plural future active indicative of obstruĊ

Source: wiktionary.org