Source : Webster's Revised Unabridged Dictionary (1913)

Birdlime \Bird"lime`\, n. [Bird + lime viscous substance.]
   An extremely adhesive viscid substance, usually made of the
   middle bark of the holly, by boiling, fermenting, and
   cleansing it. When a twig is smeared with this substance it
   will hold small birds which may light upon it. Hence:
   Anything which insnares.

         Not birdlime or Idean pitch produce A more tenacious
         mass of clammy juice.                    --Dryden.

   Note: Birdlime is also made from mistletoe, elder, etc.

Birdlime \Bird"lime`\, v. t.
   To smear with birdlime; to catch with birdlime; to insnare.

         When the heart is thus birdlimed, then it cleaves to
         everything it meets with.                --Coodwin.

Source : WordNet®

birdlime
     n : a sticky adhesive that is smeared on small branches to
         capture small birds [syn: {lime}]
     v : spread birdlime on branches to catch birds [syn: {lime}]