Extended Strong's Greek Lexicon (Abbott-Smith based)
discipline
Usage: παιδεία (-ία, Τ), -ας, ἡ (παιδεύω), [in LXX chiefly for מוּסָר ;] __1. the rearing of a child (Æsch.). __2. training, learning, instruction (Plat., al.): Eph.6:4, 2Ti.3:16. __3. As in LXX (Pro.3:11 15:5, al.), chastening, discipline: Heb.12:5 (LXX), Heb.12:7-8, 11.† (AS)