signal
adjective/ˈsɪɡnəl/
/ˈsɪɡnəl/
[only before noun] (formal)- important, clear and definite
- a signal honour
- a signal failure of leadership
Word Originadjective early 17th cent.: from French signalé, from the Italian past participle segnalato ‘distinguished, made illustrious’, from segnale ‘a signal’.Definitions on the go
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signal