definition of
buffer

[1] #1 buffer n. (chemistry) an ionic compound that resists changes in its pH. wn

[2] #2 buffer v. add a buffer (a solution); "buffered saline solution for the eyes". wn

[3] #3 buffer n. [buffer zone] a neutral zone between two rival powers that is created in order to diminish the danger of conflict. wn

[4] #4 buffer v. [cushion, soften] protect from impact; "cushion the blow". wn

[5] #5 buffer n. [fender, cowcatcher, pilot] an inclined metal frame at the front of a locomotive to clear the track. wn