ὑπομάζιον

From LSJ

τὸ τῶν γεωργῶν ὅσαι τε ἄλλαι τέχναι (Plato, Timaeus 17c10) → the class of farmers and other such crafts(men)

Source

Russian (Dvoretsky)

ὑπομάζιον: τό (sc. τέκνον) грудной младенец Diod.