- Beware - Beware of observatory! - Beware! There’s a picket - Matter of concern - Observation point - Observation post - Pay attention! There’s a guard!
- Cardinal point - Compass point - Direction - Opposite of north - US state, ... Dakota - That one of the four cardinal points directly opposite to
the north; the region or direction to the right or direction to the
right of a person who faces the east. - A country, region, or place situated farther to the south
than another; the southern section of a country.
- An instrument for measuring heights by observation of
barometric pressure; esp., one for determining heights by ascertaining
the boiling point of water. It consists of a vessel for water, with a
lamp for heating it, and an inclosed thermometer for showing the
temperature of ebullition.