Definition of "Prompt" :

noun: (computer science) a symbol that appears on the computer screen to indicate that the computer is ready to receive a command

noun: a cue given to a performer (usually the beginning of the next line to be spoken)

"The audience could hear his prompting."

verb: serve as the inciting cause of

"She prompted me to call my relatives."

verb: assist (somebody acting or reciting) by suggesting the next words of something forgotten or imperfectly learned

verb: give an incentive for action

adjective: performed with little or no delay

"A prompt reply."

adjective: according to schedule or without delay; on time

"The train is prompt."

adjective: ready and willing or quick to act

"She is always prompt to help her friends."