Definition of lack

• n. - Blame; cause of blame; fault; crime; offense.
• n. - Deficiency; want; need; destitution; failure; as, a lack of sufficient food.
• v. t. - To blame; to find fault with.
• v. t. - To be without or destitute of; to want; to need.
• v. i. - To be wanting; often, impersonally, with of, meaning, to be less than, short, not quite, etc.
• v. i. - To be in want.
• interj. - Exclamation of regret or surprise.