Definition (full): to hold aloof, abstain, to set apart, devote
Strong's Exhaustive Concordance
A primitive root; to hold aloof, i.e. (intransitivey) abstain (from food and drink, from impurity, and even from divine worship (i.e. Apostatize)); specifically, to set apart (to sacred purposes), i.e. Devote -- consecrate, separate(-ing, self).
KJV: Thus shall ye separate the children of Israel from their uncleanness; that they die not in their uncleanness, when they defile my tabernacle that is among them.
NASB: "Thus you shall keep the sons of Israel separated from their uncleanness, so that they will not die in their uncleanness by their defiling My tabernacle that is among them."
KJV: Speak unto Aaron and to his sons, that they separate themselves from the holy things of the children of Israel, and that they profane not my holy name in those things which they hallow unto me: I am the LORD.
NASB: "Tell Aaron and his sons to be careful with the holy gifts of the sons of Israel, which they dedicate to Me, so as not to profane My holy name; I am the LORD.
KJV: Speak unto the children of Israel, and say unto them, When either man or woman shall separate themselves to vow a vow of a Nazarite, to separatethemselves unto the LORD:
NASB: "Speak to the sons of Israel and say to them, 'When a man or woman makes a special vow, the vow of a Nazirite, to dedicate himself to the LORD,
KJV: He shall separatehimself from wine and strong drink, and shall drink no vinegar of wine, or vinegar of strong drink, neither shall he drink any liquor of grapes, nor eat moist grapes, or dried.
NASB: he shall abstain from wine and strong drink; he shall drink no vinegar, whether made from wine or strong drink, nor shall he drink any grape juice nor eat fresh or dried grapes.