• Webster's Revised Unabridged Dictionary
    • a Deobstruent (Med) Removing obstructions; having power to clear or open the natural ducts of the fluids and secretions of the body; aperient.
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Century Dictionary and Cyclopedia
    • deobstruent In medicine, removing obstructions. See II.
    • n deobstruent A medicine which removes obstructions and opens the natural passages of the fluids of the body; an aperient: as, calomel is a powerful deobstruent.
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Chambers's Twentieth Century Dictionary
    • adj Deobstruent de-ob′strōō-ent (med.) removing obstructions.
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In literature:

Eight days afterwards he began upon a course of bitters and deobstruents.
"An Account of the Foxglove and some of its Medical Uses" by William Withering
It is used as a perfume and a medicine, being a weak deobstruent.
"The New Gresham Encyclopedia. Vol. 1 Part 3" by Various