Meaning of BUFFER in English

BUFFER

I. ˈbə-fər noun

Etymology: origin unknown

Date: 1749

slang British : fellow , man ; especially : an old man

II. noun

Usage: often attributive

Etymology: buff, verb, to react like a soft body when struck

Date: 1835

1. : any of various devices or pieces of material for reducing shock or damage due to contact

2. : a means or device used as a cushion against the shock of fluctuations in business or financial activity

3. : something that serves as a protective barrier: as

a. : buffer state

b. : a person who shields another especially from annoying routine matters

c. : mediator 1

4. : a substance capable in solution of neutralizing both acids and bases and thereby maintaining the original acidity or basicity of the solution ; also : a solution containing such a substance

5. : a temporary storage unit (as in a computer) ; especially : one that accepts information at one rate and delivers it at another

• buff·ered -fərd adjective

III. transitive verb

( buff·ered ; buff·er·ing -f(ə-)riŋ)

Date: 1845

1. : to lessen the shock of : cushion

2. : to treat (as a solution or its acidity) with a buffer ; also : to prepare (aspirin) with an antacid

3. : to collect (as data) in a buffer

IV. noun

Date: 1854

: one that buffs

Merriam-Webster's Collegiate English vocabulary.      Энциклопедический словарь английского языка Merriam Webster.