(dated, offensive) One who takes an interest in the black (negro) race.
1803, Review of Second Voyage à la Louisiane by [Louis Narcisse] Baudry des Lozières in The Edinburgh Review, Volume 3, Number 5, October 1803, p. 82,
In the form of a dedication to those colonists who have been ruined by the revolution of the ‘negrophiles,’ our author contrives to give a life and character of himself; reminds these unfortunate people […] how he used to plead their causes for small fees; how he afterwards gave up the bar in order to fight for them […]