a device for showing the operating condition of some system
a signal for attracting attention
(chemistry) a substance that changes color to indicate the presence of some ion or substance; can be used to indicate the completion of a chemical reaction or (in medicine) to test for a particular reaction
scope for freedom of e.g. action or thought; freedom from restriction
the angular distance between an imaginary line around a heavenly body parallel to its equator and the equator itself
an imaginary line around the Earth parallel to the equator
freedom from normal restraints in conduct; "the new freedom in movies and novels"; "allowed his children considerable latitude in how they spent their money"