TZ-W-H – ‘law, command; lawful action, directed order’

6680. צוה tsavah, tsaw-vaw´; a primitive root; (intensively) to constitute, enjoin.

TZW This very important root characterizes every kind of line drawn toward an end, of which the sign צ is symbol. It develops every idea of order, command, direction, impressed by the primum mobile.

TZWH A law, an ordinance; an order, a command; that which leads to an end: a precept, a statute, a maxim of conduct: action of ordering, directing, leading; impressing a movement. (The Hebraic Tongue Restored, Fabré d’Olivet, pp. 432-433)