Thyle

Part of speech: noun

Definitions

1. A balloon-like outgrowth from a neighboring cell that pushes into and plugs a water-conducting vessel in wood
2. The bubble-shaped protrusion a plant cell forms inside a xylem vessel, which can block the flow of sap
3. A sac-like growth that extends through a pit into a woody vessel and seals off its passage

Etymology: "Thyle" is a learned borrowing from Old English "þyle," a word for a public speaker or orator, one who addressed an assembly. Its closest relative in the source is Old Norse "þulr," which carried a similar sense of a reciter or lawspeaker, so the two words point to a shared Germanic ancestor that once named someone who spoke on behalf of a community. The English form survived not as everyday speech but as a deliberate revival. Scholars and writers who studied early Germanic languages reached back to Old English vocabulary, and "thyle" was one of the older words they brought forward, which is why it sounds so out of place in modern conversation. It is a word that was recovered from old texts rather than passed down through ordinary talk.