means a hollow cylinder used to carry liquids, gases, or smoke — or, as a verb, to convey something through such a channel or to play a tune on a wind instrument.

from From Old English 'pipe,' a tube or wind instrument, drawn from Vulgar Latin 'pipa,' a pipe for playing. That root traces back to Latin 'pipare,' to chirp or peep — the small high sound a bird makes. So the word began as imitation of a sound, then was lent to the slender wind instrument that made similar sounds, and only later to any hollow tube that carries things. The same nest of meaning gives us 'to pipe up' (to speak out, like a chirp) and a 'pipe' of music. Cousins like Dutch 'pijp' and German 'Pfeife' grew from the same Latin source as Christianity spread the word across Europe.