keep within

keep within (something or some place)

1. To remain inside of something or the boundaries of some physical area. We are asking all visitors to please keep within the marked area. The animals are trained to keep within the yard.
2. To cause or instruct someone or an animal to remain inside of something or such a boundary. In this usage, a noun or pronoun is used between "keep" and "within." Please keep your dogs within the fenced area while the work is being done. You'll have to keep the students within the school until the tornado warning has been lifted.
3. To store something inside of something or some place. In this usage, a noun or pronoun is used between "keep" and "within." Often used in passive constructions. Please ensure that no valuables are kept within the lockers overnight. Records of all such incidents are kept within the company's computer files indefinitely.
4. To not exceed the limits, extent, or scope of some parameter, such as time, budget, law, etc. I don't know how we're going to keep within budget without firing one of our staff members. Please keep within the guidelines I gave you. It doesn't look like they'll be able to keep within the deadline.
5. To ensure that someone or something remains within such a parameter. Local lawmakers want to keep the case within their jurisdiction instead of making it a federal issue. You'll have to learn to keep your spending within the limits of your salary.
See also: keep, within
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.

keep within something

to remain within a thing or within the boundaries of something. If you keep within the tourist area, you will be safe. Please keep within the yard.
See also: keep, within
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.
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References in classic literature ?
As we have no public notoriety, no concurrent testimony, no records to support and corroborate what we deliver, it becomes us to keep within the limits not only of possibility, but of probability too; and this more especially in painting what is greatly good and amiable.
"2d, He shall not presume to come into our metropolis, without our express order; at which time, the inhabitants shall have two hours warning to keep within doors.
A garden smoothly laid with turf, divided by thick hedges, with raised beds of bright flowers, such as we keep within walls in England, would have been out of place upon the side of this bare hill.
"See, and don't expose yourself; keep within, and fire through the porch.
These arrangements being all made simultaneously, or nearly so, were completed by the time it got dark; and then the streets were comparatively clear, and were guarded at all the great corners and chief avenues by the troops: while parties of the officers rode up and down in all directions, ordering chance stragglers home, and admonishing the residents to keep within their houses, and, if any firing ensued, not to approach the windows.
"Then stand on your guard, sir!" With a clatter and dash the two blades met once more, Alleyne pressing in so as to keep within the full sweep of the heavy blade, while Tranter as continually sprang back to have space for one of his fatal cuts.
During the harvesting season of wheat, paddy and sugar cane, even a bike rider cannot keep within their own riding lanes due to poor traffic management.
The chefs have prepared menus to ensure you keep within your SmartPoints limits, and there's an array of classes to work them off - from Zumba and yoga to Aquafit water aerobics.
He warned those accredited that their pharmacies stand the risk of losing their accreditation if they do not keep within the standard set by the LMHPRA.
"So I'll keep doing what I'm doing and keep within the spirit of the game."
We need this type of preachers who explain the Word of God but keep within the Church for they know the mystery of the Sacrament is something else, especially the mystery of the Mass.
After Thursday's narrow Euro 2016 qualifying defeat against Wales, Cyprus will be looking to keep within touch of third place in Group B but face a daunting task against a much-fancied Belgium side on Sunday night at the GSP Stadium in Nicosia.
If cyclists keep within the designated cycle lane, they are certainly safe; but I have seen in London two cyclists cycling abreast within a cycle lane and a third, cycling much faster, overtaking them going outside the designated lane and then returning into it.
PSG have opted for the loan deal to work their way around Financial Fair Play restrictions although there is still talk that they will have to sell off one big name player to keep within the rules.