1) the mutual love of parents and children and wives and husbands
2) loving affection, prone to love, loving tenderly
2a) chiefly of the reciprocal tenderness of parents and children
Part of Speech: adjective
From G5384 and στοργή storgê (cherishing one's kindred, especially parents or children); fond of natural relatives, that is, fraternal towards fellow Christians: - kindly affectioned.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root φιλόστοργος; click on the second column to search for that grammatical form of the root φιλόστοργος; click on the third column to search for that word and grammatical form; click on the total to search for the root φιλόστοργος.