1) a yoke
1a) a yoke that is put on draught cattle
1b) metaphorically, used of any burden or bondage
1b1) as that of slavery
1b2) of troublesome laws imposed on one, especially of the Mosaic law, hence the name is so transferred to the commands of Christ as to contrast them with the commands of the Pharisees which were a veritable 'yoke'; yet even Christ's commands must be submitted to, though easier to be kept
2) a balance, pair of scales
Part of Speech: noun masculine
Citing in TDNT: 2:896, 301
From the root of ζεύγνυμι zeugnumi (to join, especially by a "yoke"); a coupling, that is, (figuratively) servitude (a law or obligation); also (literally) the beam of the balance (as connecting the scales): - pair of balances, yoke.
|b balance scale||6.214|
|(ἐπιτίθημι ζυγὸν ἐπὶ τὸν τράχηλον) load down with obligations||22.27|
|(εἰμὶ ὑπὸ ζυγόν) be a slave||87.80|
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 ζυγός; click on the second column to search for that grammatical form of the root ζυγός; click on the third column to search for that word and grammatical form; click on the total to search for the root ζυγός.