RATCHET

PRONUNCIATION: (RACH-it)

MEANING: noun: 1. A mechanism consisting of a toothed wheel or bar engaged by a pawl to allow controlled movement in one direction only.
2. An incremental change, typically in one direction and irreversible.
verb tr., intr.: To move or to cause to move in small increments, especially progressively or irreversibly.

ETYMOLOGY:
From French rochet (ratchet). Earliest documented use: 1650.
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PRATCHET - author Terry doesn't have his 4-o'clock snack

BRAT, CHET? - the Hardy Boys offer their friend a treat at the local deli

RANCHET - a diminutive tourist attraction out West, with just a hut and a shed and a couple of ponies