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1570s, buffe leather "leather made of buffalo hide," from Middle French buffle "buffalo" (15c., via Italian, from Latin bufalus; see buffalo (n.)).
The color term comes from the hue of buffalo hides (later ox hides). Association of "hide" and "skin" led c.1600 to in the buff. Buff-colored uniforms of New York City volunteer firefighters since 1820s led to meaning "enthusiast" (1903).
The Buffs are men and boys whose love of fires, fire-fighting and firemen is a predominant characteristic. [N.Y. "Sun," Feb. 4, 1903]
"well-built, hunky," 1980s, from buff (v.) "polish, make attractive."
"to polish, make attractive," 1885, in reference to the treatment of buff leather or else to the use of buff cloth in polishing metals, from buff (n.). Related: Buffed; buffing.
buffer buff·er (bŭf'ər)
A substance that minimizes change in the acidity of a solution when an acid or base is added to the solution. v. buff·ered, buff·er·ing, buff·ers
To treat a solution with a buffer.
[originally fire buff, because New York City volunteer firefighters about 1820 wore buff-colored, light brownish yellow coats; transferred to persons who like to watch fires, then to enthusiasts in general]
[1604+; probably fr the pale yellowish color of the leather called buff, likened to skin]
(also buffed, buffed out) Well-built; muscular; hunky: Looking mighty buff, by the way (1980s+ Teenagers)verb
(also buff out) To do body-building; put on muscle; become brawnier: Fudgie wondered if Tweezer had buffed out in San Quentin (1980s+ Teenagers)verb phrase
(also buff up) To be ingratiating and attentive, so as to keep on good terms: Gotta go. Gotta buff (1990s+ Hollywood)
[probably fr buff, ''polish, make attractive,'' a process originally done with a leather buff stick; the adj sense may be derived fr buffalo, as an image of strength]
To make a patient's chart look good, esp in preparing him or her for discharge
[1970s+ Medical; fr buff, ''to polish'']
An HH53 long-range rescue helicopter, called a ''big ugly fat fellow'' (1960s+ Air Force)
1. An area of memory used for storing messages. Typically, a buffer will have other attributes such as an input pointer (where new data will be written into the buffer), and output pointer (where the next item will be read from) and/or a count of the space used or free. Buffers are used to decouple processes so that the reader and writer may operate at different speeds or on different sized blocks of data.
There are many different algorithms for using buffers, e.g. first-in first-out (FIFO or shelf), last-in first-out (LIFO or stack), double buffering (allowing one buffer to be read while the other is being written), cyclic buffer (reading or writing past the end wraps around to the beginning).
2. An electronic device to provide compatibility between two signals, e.g. changing voltage levels or current capability.