Source : Webster's Revised Unabridged Dictionary (1913)

Tuberosity \Tu`ber*os"i*ty\, n.; pl. {Tuberosities}. [Cf. F.
   tub['e]rosit['e].]
   1. The state of being tuberous.

   2. An obtuse or knoblike prominence; a protuberance.

Source : WordNet®

tuberosity
     n : a protuberance on a bone especially for attachment of a
         muscle or ligament [syn: {tubercle}, {eminence}]