Definition of Set out

• take the first step or steps in carrying out an action; "We began working at dawn"; "Who will start?"; "Get working as soon as the sun rises!"; "The first tourists began to arrive in Cambodia"; "He began early in the day"; "Lets get down to work now"
• lay out orderly or logically in a line or as if in a line; "lay out the clothes"; "lay out the arguments"
• leave; "The family took off for Florida"