a giving over which is done by word of mouth or in writing, i.e. tradition by instruction, narrative, precept, etc.
objectively, that which is delivered, the substance of a teaching
of the body of precepts, esp. ritual, which in the opinion of the later Jews were orally delivered by Moses and orally transmitted in unbroken succession to subsequent generations, which precepts, both illustrating and expanding the written law, as they did were to be obeyed with equal reverence