pupils

n an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures

n a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion

watch over like a shepherd, as a teacher of her pupils v

someone who keeps the sheep together in a flock v watch over like a shepherd, as a teacher of her pupils v tend as a shepherd, as of sheep or goats

teaching pupils individually (usually by a tutor hired privately)