Definition: Heat-generating liquids that are thinner than ointments and are applied to the skin with friction. (McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
IM for general only, qualif permitted; NIM (no qualif) with specific drug IM (with qualif); /adv eff permitted but be careful: it may be the adv eff of the drug in liniment form, not the liniment