אנך 'ănâk an-awk' Probably from an unused root meaning to be narrow; according to most a plumb line, and to others a hookKJV Usage: plumb-line.
Brown-Driver-Briggs' Hebrew DefinitionsBDB596 אנך 1. plummet, plumb, lead-weight Origin: probably from an unused root meaning to be narrow TWOT: 129.1 Parts of Speech: Noun Masculine
תּנוּך te nûk ten-ook' Perhaps form the same as H594 through the idea of protraction; a pinnacle, that is, extremityKJV Usage: tip.