Alveus

Part of speech: noun

Pronunciation: /ˈæl.vi.əs/

Definitions

1. A channel or basin formed naturally or artificially to convey water or other liquids
2. A hollow or trough that directs the flow of water, often found in natural or constructed waterways
3. A vessel-like hollow that serves as a passage for water in natural riverbeds or irrigation systems

Etymology: "Alveus" was a Latin word for a hollow, trough-shaped vessel, and its range was wide: a trough, a bathtub, the hull or hold of a ship, a boat, the bed of a river or trench, and even a beehive. That spread of meanings shows how a simple idea, something scooped out to hold a liquid, could be applied to very different containers. English borrowed the word directly from Latin, and it first appears in the late 17th century with a sense closer to those hollow vessels than to the channel it now names. The modern meaning came as the word narrowed toward natural and engineered waterways. Today "alveus" is used for a channel or basin, whether a river's bed or a artificial conduit built to carry water or other liquids. The leap from a container to the ground that water flows through is the main shift in the word's history.