1) an order, command, charge, precept, injunction
1a) that which is prescribed to one by reason of his office
2) a commandment
2a) a prescribed rule in accordance with which a thing is done
2a1) a precept relating to lineage, of the Mosaic precept concerning the priesthood
2a2) ethically used of the commandments in the Mosaic law or Jewish tradition
Part of Speech: noun feminine
Citing in TDNT: 2:545, 234
From G1781; injunction, that is, an authoritative prescription: - commandment, precept.
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 ἐντολή; click on the second column to search for that grammatical form of the root ἐντολή; click on the third column to search for that word and grammatical form; click on the total to search for the root ἐντολή.