A sequence

string, chain, succession; see series.

A locomotive and attached cars

transport train, passenger, train, freight train, local train, limited, diplomatic train, supply train, express train, excursion train, commuter train, troop train, boat train, mail train, rapide (French), subway, underground, elevated, electric*, diesel*, choo-choo*, gully-jumper*, rattler*, blind*; see also railroad.

To drill

practice, exercise, discipline; see reach 2.

To educate

instruct, tutor, enlighten; see teach 1.

To toughen oneself

prepare, inure, grow strong, get into practice, reduce, make ready, fit out, equip, qualify, bring up to standard, whip into shape*, get a workout*.

Antonyms weaken*, break training, be unfit.

To direct growth

rear, lead, discipline (oneself), mold, bend, implant, guide, shape, care for, encourage, infuse, imbue, order, bring up, nurture, nurse, prune, weed; see also raise 1.

Antonyms neglect*, ignore*, disdain. *

To aim

cock, level, draw a bead; see aim 2. See syn. study at teach.