olemus
õhem lame osa

Wiktionary:
2. the flat functional end of a propeller, oar, hockey stick, screwdriver, skate, etc

näiteid
https://en.wikipedia.org/wiki/Turbine_blade

https://duckduckgo.com/?q=fan+blade&t=h_&iax=images&ia=images

https://duckduckgo.com/?q=propeller+blade&t=h_&iar=images&iax=images&ia=images