observatory

observatory is a Noun

Definition:

[1] A place or building for making observations on the heavenly bodies. The new observatory in Greenwich Park. Evelyn.

[2] A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena.

[3] A place, as an elevated chamber, from which a view may be observed or commanded.

[4] A lookout on a flank of a battery whence an officer can note the range and effect of the fire. Farrow.

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