In or into the inner part; inside. Inside the mind, heart, or soul; inwardly. In the inner part or parts of; inside: resentment seething within him. Inside the limits or extent of in time or distance: arrived within two days; stayed within earshot; within ten miles of home. Inside the fixed limits of; not beyond: lived within her income. In the scope or sphere of: acted within the law; within the medical profession. Inside a specified amount or degree: The team had pulled to within five points of winning. An inner position, place, or area: treachery from within.