1. signal - Noun
2. signal - Adjective
3. signal - Verb
4. signal - Adjective Satellite
A sign made for the purpose of giving notice to a person of some occurence, command, or danger; also, a sign, event, or watchword, which has been agreed upon as the occasion of concerted action.
Noticeable; distinguished from what is ordinary; eminent; remarkable; memorable; as, a signal exploit; a signal service; a signal act of benevolence.
Of or pertaining to signals, or the use of signals in conveying information; as, a signal flag or officer.
To communicate by signals; as, to signal orders.
To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor.
Source: Webster's dictionaryWhen defeat comes, accept it as a signal that your plans are not sound, rebuild those plans, and set sail once more toward your coveted goal. Napoleon Hill
In formal logic, a contradiction is the signal of defeat, but in the evolution of real knowledge it marks the first step in progress toward a victory. Alfred North Whitehead
Ships that pass in the night, and speak each other in passing, only a signal shown, and a distant voice in the darkness; So on the ocean of life, we pass and speak one another, only a look and a voice, then darkness again and a silence. Henry Wadsworth Longfellow
Death loves a shining mark, a signal blow. Edward Young
As a privileged survivor of the First World War, I hope I may be allowed to interject here a deeply felt tribute to those who were not fortunate enough to succeed, but who shared the signal honor of trying to the last to salvage peace. Rene Cassin
When the hunting dog barks it's a signal that the prey is near. Sicilian Proverb