Definitions
1.NounThe practice of complying with a law, custom, command or rule.
2.NounThe custom of celebrating a holiday or similar occasion.
3.NounObservation or the act of watching.
4.NounA rule governing a religious order, especially in the Roman Catholic church."Thomas Merton was a monk in the Order of Cistertians of the Strict Observance."
5.NounThat which is to be observed.
6.NounReverence; homage.