The Collaborative International Dictionary of English v.0.48:

Baobab \Ba"o*bab\ (b[=a]"[-o]*b[a^]b or b[aum]"[-o]*b[a^]b), n.
   [The native name.] (Bot.)
   A gigantic African tree (Adansonia digitata), also
   naturalized in India. See Adansonia.
   [1913 Webster]

WordNet (r) 3.0 (2006):

baobab
    n 1: African tree having an exceedingly thick trunk and fruit
         that resembles a gourd and has an edible pulp called monkey
         bread [syn: baobab, monkey-bread tree, Adansonia
         digitata]