from
The Collaborative International Dictionary of English v.0.48
Signal \Sig"nal\, a. [From signal, n.: cf. F. signal['e].]
1. Noticeable; distinguished from what is ordinary; eminent;
remarkable; memorable; as, a signal exploit; a signal
service; a signal act of benevolence.
[1913 Webster]
As signal now in low, dejected state
As erst in highest, behold him where he lies.
--Milton.
[1913 Webster]
2. Of or pertaining to signals, or the use of signals in
conveying information; as, a signal flag or officer.
[1913 Webster]
{The signal service}, a bureau of the government (in the
United States connected with the War Department) organized
to collect from the whole country simultaneous raports of
local meteorological conditions, upon comparison of which
at the central office, predictions concerning the weather
are telegraphed to various sections, where they are made
known by signals publicly displayed.
{Signal station}, the place where a signal is displayed;
specifically, an observation office of the signal service.
[1913 Webster]
Syn: Eminent; remarkable; memorable; extraordinary; notable;
conspicuous.
[1913 Webster]