› in or toward a low or lower position, from a higher one: There’s a bathroom down the stairs and to the right. He poured the rest of the coffee down the drain. The cat jumped down from the chair. Please sit down (= stop standing and come to a sitting position). If you feel ill, why don’t you lie down (= stop standing and come to a lying position) for a while? › Down also means to the ground, esp. as a result of an action that causes something to fall: We’re going to have to cut down this tree. › Down also means firmly, in a fixed position, esp. as a result of an action: Workers in the convention center taped down the edges of the carpets. fig. We hope to nail down the agreement at tomorrow’s meeting.