designed to be folded out for use and collapsed when not in use: a fold-down tray on the back of an airplane seat; a fold-down trailer for camping.
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How to use fold-down in a sentence
Their first dining-room table was a fold-down ironing board in the kitchen.
There are two smoke-stacks which fold down when it submerges.Inventions of the Great War | A. Russell (Alexander Russell) Bond
Turn top and bottom edges under to fit the side crown, and press bottom fold down close to brim.Make Your Own Hats | Gene Allen Martin
It may be made very portable, by the arms which carry the cups being fitted to unscrew or to fold down.A Treatise on Meteorological Instruments | Henry Negretti
He wore tight velveteen breeches, with a heavy fold down the outside seam, which was ornamented with silver buttons.The Light of Western Stars | Zane Grey
The whole implement is made to fold down, and is provided with wheels so that it can be moved from stack to stack.