Meaning of BLADE in English

BLADE

/ bleɪd; NAmE / noun

1.

the flat part of a knife, tool or machine, which has a sharp edge or edges for cutting

—picture at knife , penknife , scissors , scythe , handsaw

—see also razor blade , switchblade

2.

one of the flat parts that turn around in an engine or on a helicopter :

the blades of a propeller

rotor blades on a helicopter

—picture at helicopter

3.

the flat wide part of an oar (= one of the long poles that are used to row a boat) that goes in the water

—picture at kayak

4.

a single flat leaf of grass

5.

the flat metal part on the bottom of an ice skate

—see also shoulder blade

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WORD ORIGIN

Old English blæd leaf of a plant (also in sense 2), of Germanic origin; related to Dutch blad and German Blatt .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.