definition of
impact

[1] #1 impact n. the striking of one body against another. wn

[2] #2 impact n. [wallop] a forceful consequence; a strong effect; "the book had an important impact on my thinking"; "the book packs a wallop". wn

[3] #3 impact n. [impingement, encroachment] influencing strongly; "they resented the impingement of American values on European culture". wn

[4] #4 impact v. press or wedge together; pack together. wn

[5] #5 impact v. [affect, bear upon, bear on, touch on, touch] have an effect upon; "Will the new rules affect me?". wn