Definition
An expectorator is something that facilitates the act of expectorating—coughing up and expelling mucus or phlegm. This can refer to either a medication that helps loosen mucus (an expectorant), or sometimes, though less commonly today, a container used for spitting out phlegm. So, it can describe the medicine itself, or an older term for a spittoon. Consider it a tool or substance to aid in clearing the airways.