1) a tutor, i.e. a guardian and guide of boys. Among the Greeks and the Romans the name was applied to trustworthy slaves who were charged with the duty of supervising the life and morals of boys belonging to the better class. The boys were not allowed so much as to step out of the house without them before arriving at the age of manhood.
Part of Speech: noun masculine
Citing in TDNT: 5:596, 753
From G3816 and a reduplication form of G71; a boy leader, that is, a servant whose office it was to take the children to school; (by implication [figuratively] a tutor ["paedagogue"]): - instructor, schoolmaster.
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 παιδαγωγός; click on the second column to search for that grammatical form of the root παιδαγωγός; click on the third column to search for that word and grammatical form; click on the total to search for the root παιδαγωγός.