Definify.com
Webster 1913 Edition
Informer
1.
One who informs, animates, or inspires.
[Obs.]
Thomson.
Nature,
informer
of the poet’s art. Pope.
2.
One who informs, or imparts knowledge or news.
3.
(Law)
One who informs a magistrate of violations of law; one who informs against another for violation of some law or penal statute.
Common informer
(Law)
, one who habitually gives information of the violation of penal statutes, with a view to a prosecution therefor.
Bouvier.
Wharton.
Webster 1828 Edition
Informer
INFORM'ER
,Noun.
1.
One who communicates, or whose duty it is to communicate to a magistrate a knowledge of the violations of law, and bring the offenders to trial.