Definition of keep :
1. A cap for retaining anything, as a journal box, in place.
2. That which is kept in charge; a charge.
3. That which keeps or protects; a stronghold; a fortress; a castle; specifically, the strongest and securest part of a castle, often used as a place of residence by the lord of the castle, especially during a siege; the donjon. See Illust. of Castle.
4. The act or office of keeping; custody; guard; care; heed; charge.
5. The means or provisions by which one is kept; maintenance; support; as, the keep of a horse.
6. The state of being kept; hence, the resulting condition; case; as, to be in good keep.
7. To attend upon; to have the care of; to tend.
8. To be in session; as, school keeps to- day.
9. To care; to desire.
10. To cause to remain in a given situation or condition; to maintain unchanged; to hold or preserve in any state or tenor.
11. To confine one's self to; not to quit; to remain in; as, to keep one's house, room, bed, etc. ; hence, to haunt; to frequent.
12. To continue in, as a course or mode of action; not to intermit or fall from; to hold to; to maintain; as, to keep silence; to keep one's word; to keep possession.
13. To have habitually in stock for sale.
14. To have in custody; to have in some place for preservation; to take charge of.
15. To have in one's service; to have and maintain, as an assistant, a servant, a mistress, a horse, etc.
16. To hold; to restrain from departure or removal; not to let go of; to retain in one's power or possession; not to lose; to retain; to detain.
17. To last; to endure; to remain unimpaired.
18. To maintain, as an establishment, institution, or the like; to conduct; to manage; as, to keep store.
19. To observe duty, as a festival, etc. ; to celebrate; to solemnize; as, to keep a feast.
20. To observe; to adhere to; to fulfill; not to swerve from or violate; to practice or perform, as duty; not to neglect; to be faithful to.
21. To preserve from danger, harm, or loss; to guard.
22. To preserve from discovery or publicity; not to communicate, reveal, or betray, as a secret.
23. To record transactions, accounts, or events in; as, to keep books, a journal, etc. ; also, to enter ( as accounts, records, etc. ) in a book.
24. To remain in any position or state; to continue; to abide; to stay; as, to keep at a distance; to keep aloft; to keep near; to keep in the house; to keep before or behind; to keep in favor; to keep out of company, or out reach.
25. To reside for a time; to lodge; to dwell.
26. To supply with necessaries of life; to entertain; as, to keep boarders.
27. To take care; to be solicitous; to watch.
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grip (part of speech: verb)
conserve (part of speech: verb)
permanently (part of speech: adverb)
prison (part of speech: noun)
handcuff, coop, collar, reform school, cooler, jailhouse, cage, jail, penal colony, pillory, pen, reformatory, harness, tether, irons, jug, brig, bridle, dungeon, pound, prison, fence, penitentiary, stronghold, lockup, vise, San Quentin, shackle, stockade, confine, manacle, straight jacket, pinion, oubliette, Bastille, cell, gaol, Alcatraz
withdraw (part of speech: verb)