Ob*serv"a*to*ry (?), n.; pl. Observatories (#). [Cf. F. observatoire.]
A place or building for making observations on the heavenly bodies.
The new observatory in Greenwich Park.
A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena.
A place, as an elevated chamber, from which a view may be observed or commanded.
A lookout on a flank of a battery whence an officer can note the range and effect of the fire.
© Webster 1913.