A person who enjoys or frequently takes medication in pill form.
A syringe-like device for administering medicinal pills to animals.
A person who frequently takes any other kind of pill, such as vitamins or illicit drugs.
One who deals with reality in a way consistent with being under the influence of (or "spaced out on") drugs.
A person in training to be a (generally military) astronaut, especially in science fiction.
One who forgets, daydreams, or otherwise is distracted from reality more often than most.