1. Blame; cause of blame; fault; crime; offense.
2. Deficiency; want; need; destitution; failure; as, a lack of sufficient food. "She swooneth now and now for lakke of blood." (Chaucer) "Let his lack of years be no impediment." (Shak)
Origin: OE. Lak; cf. D. Lak slander, laken to blame, OHG. Lahan, AS. Lean.