bitterwood \bit"terwood`\, n.
   a west indian tree picraena excelsa from the wood of
   which the bitter drug jamaica quassia is obtained.
   1913 webster
see also:
picraena excelsa 

bitterwood
     n 1: handsome south american shrub or small tree having bright
          scarlet flowers and yielding a valuable fine-grained
          yellowish wood; yields the bitter drug quassia from its
          wood and bark syn: quassia, quassia amara
     2: west indian tree yielding the drug jamaica quassia syn: jamaica
        quassia, picrasma excelsa, picrasma excelsum
     3: medium to large tree of tropical north and south america
        having odd-pinnate leaves and long panicles of small pale
        yellow flowers followed by scarlet fruits syn: paradise
        tree, simarouba glauca
see also:
quassia quassia amara jamaica quassia picrasma excelsa picrasma excelsum paradise tree 
simarouba glauca