Source : Webster's Revised Unabridged Dictionary (1913)

Imagine \Im*ag"ine\, v. t. [imp. & p. p. {Imagined}; p. pr. &
   vb. n. {Imagining}.] [F. imaginer, L. imaginari, p. p.
   imaginatus, fr. imago image. See {Image}.]
   1. To form in the mind a notion or idea of; to form a mental
      image of; to conceive; to produce by the imagination.

            In the night, imagining some fear, How easy is a
            bush supposed a bear!                 --Shak.

   2. To contrive in purpose; to scheme; to devise; to compass;
      to purpose. See {Compass}, v. t., 5.

            How long will ye imagine mischief against a man?
                                                  --Ps. lxii. 3.

   3. To represent to one's self; to think; to believe. --Shak.

   Syn: To fancy; conceive; apprehend; think; believe; suppose;
        opine; deem; plan; scheme; devise.