1 period, interval, time, term, season; stint, turn, run, course, shift, tour (of duty), watch, round:
We had a spell of bad weather. Each of us had a spell at the tiller during the crossing.
2 relieve, replace, substitute for, take over for or from:
After 36 hours of uninterrupted duty, I needed someone to spell me for a while.
1 enchantment, allure, charm, magic, witchcraft, witchery, fascination, captivation, enthralment:
She had them all under her spell.
2 incantation, formula, charm:
The priest uttered some spell and I found myself unable to move.
3 attraction, lure, allure, appeal, draw, pull, magnetism, fascination, influence, mesmerism, hypnotic effect:
We were drawn ever onward by the spell of the jungle.
1 augur, portend, presage, promise, hold promise of, signify, point to, indicate, omen, bode, look like, amount to, mean:
Harry's conviction will spell the end of his career as a bank robber.
2 spell out. specify, delineate, make clear or plain or explicit, clarify, elucidate:
She despises you - I can't spell it out for you more plainly than that.