1. paying attention: the attentive watching of somebody or something
2. observing of developments in something: the careful watching and recording of something, e.g. a natural phenomenon, as it happens
3. record of something seen or noted: the result or record of observing something such as a natural phenomenon and noting developments
4. remark or comment: a remark or comment on something that has been noticed
5. act of observing or obeying: the act of observing a religious occasion or ritual or of obeying a law or rule
6. navigation sighting with navigational instrument: a sighting with a navigational instrument to establish the observer's position in relation to an astronomical object such as the Sun
7. navigation navigational instrument reading: the reading taken from a navigational instrument that has been used to find the observer's position in relation to an astronomical object