a. and sb. [f. EXPECTORATE v.: see -ATIVE.]
A. adj. Of or pertaining to expectoration.
1883. Grant White, Adams in Eng., 125. Leaning against the stone, he began an expectorative demonstration.
B. sb. = EXPECTORANT sb.
1666. G. Harvey, Morb. Angl. (1672), x. 64. Syrups or other expectoratives.