All obeyed
The wonted signal and superior voice
Of this great potentate. Milton. [ 1913 Webster ]

2. A token; an indication; a foreshadowing; a sign; anything taken as evidence of some process. [ 1913 Webster +PJC ]

The weary sun . . .
Gives signal of a goodly day to-morrow. Shak. [ 1913 Webster ]

There was not the least signal of the calamity to be seen. De Foc. [ 1913 Webster ]

3. Hence: (Electronics) A measureable electrical quantity, such as voltage or current, that conveys information by varying in magnitude over time; as, the signals from the strongest commercial radio stations can be received over hundreds of miles. [ PJC ]

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 ]

2. To notify by a signals; to make a signal or signals to; as, to signal a fleet to anchor. M. Arnold. [ 1913 Webster ]

It is this passion which drives men to all the ways we see in use of signalizing themselves. Burke. [ 1913 Webster ]

2. To communicate with by means of a signal; as, a ship signalizes its consort. [ 1913 Webster ]

3. To indicate the existence, presence, or fact of, by a signal; as, to signalize the arrival of a steamer. [ 1913 Webster ]