obstruent

Ob"stru*ent, a. Etym: [L. obstruens, p.pr. of obstruere. See Obstruct.] Defn: Causing obstruction; blocking up; hindering; as, an obstruent medicine. Johnson. Ob"stru*ent, n. Defn: Anything that obstructs or closes a passage; esp., that which obstructs natural passages in the body; as, a medicine which acts as an obstruent.

---