definition of
startle

[1] #1 startle v. [galvanize, galvanise] to stimulate to action ; "..startled him awake"; "galvanized into action". wn

[2] #2 startle n. [jump, start] a sudden involuntary movement; "he awoke with a start". wn

[3] #3 startle v. [jump, start] move or jump suddenly, as if in surprise or alarm; "She startled when I walked into the room". wn