definition of
demo

[1] #1 demo n. [demonstration] a visual presentation showing how something works; "the lecture was accompanied by dramatic demonstrations"; "the lecturer shot off a pistol as a demonstration of the startle response". wn

[2] #2 demo v. [show, exhibit, present, demonstrate] give an exhibition of to an interested audience; "She shows her dogs frequently"; "We will demo the new software in Washington". wn