1) to gnaw, crunch, chew raw vegetables or fruits (as nuts, almonds)
1a) of animals feeding
1b) of men
2) to eat
Part of Speech: verb
Citing in TDNT: 8:236, 1191
Probably strengthened from a collateral form of the base of G5134 and G5147 through the idea of corrosion or wear; or perhaps rather of a base of G5167 and G5149 through the idea of a craunching sound; to gnaw or chew, that is, (genitive case) to eat: - eat.
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 τρώγω; click on the second column to search for that grammatical form of the root τρώγω; click on the third column to search for that word and grammatical form; click on the total to search for the root τρώγω.