Definition of declinations:
(n) :
A refusal.
(n) :
At a given point, the angle between magnetic north and true north.
(n) :
At a given point, the angle between the line connecting this point with the geographical center of the earth and the equatorial plane.
(n) :
(linguistics, prosody) The gradual decline in the overall fundamental frequency or pitch of speech over the course of an utterance, independent of local variations such as tones and pitch accents.
(n) :
(grammar, obsolete) Declension.
(n) :
(archaic) The act or state of bending downward; inclination.