Meaning of BLUNT in English

I. blunt 1 /blʌnt/ BrE AmE adjective

[ Date: 1200-1300 ; Origin: Perhaps from Old Norse blundr 'sleeping' ]

1 . not sharp or pointed OPP sharp :

Sharpen all your blunt knives.

a blunt pencil

2 . speaking in an honest way even if this upsets people ⇨ bluntly :

To be blunt, many of the candidates cannot read or write.

Julian’s blunt words hurt her.

3 . blunt instrument

a) a heavy object that is used to hit someone:

The victim suffered a blow to the head from a blunt instrument.

b) a method of doing something that does not work very well because it has a lot of other effects that you do not want:

The exams are a blunt instrument that will reveal little about children’s abilities.

—bluntness noun [uncountable]

II. blunt 2 BrE AmE verb [transitive]

1 . to make a feeling less strong OPP sharpen :

The bad weather blunted their enthusiasm for camping.

2 . to make the point of a pencil or the edge of a knife less sharp OPP sharpen

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.