foldingprop
nounUK /ˈfəʊldɪŋ prɒp/
US /ˈfoʊldɪŋ prɑːp/
A folding prop is a propeller with blades that can fold back when it is not spinning.
The sailboat's folding prop reduces drag when the engine is off.
OTHER MEANINGS
2. A propeller whose blades fold to save space during storage or transport.
He packed the folding prop carefully in the box for the trip.
3. A model-airplane propeller designed to fold on impact to avoid breaking.
The folding prop survived the rough landing without a scratch.
4. A drone propeller with hinged blades that fold for easy carrying.
She folded the drone's props before slipping it into her backpack.