Meaning

originFrom Middle English theu, thew (“way of behaving towards others, bearing, manners; habit, practice; good manners, courtesy; characteristic act; characteristic, trait; custom, tradition; established rule, ordinance; injunction; moral character; (in the plural) set of moral principles, morals; moral quality, virtue or vice; might, power, strength”) [and other forms] (often in the plural form theus,…

Etymology from Wiktionary, CC BY-SA 3.0