The Collaborative International Dictionary of English v.0.48:
chittamwood \chittamwood\ n.
1. a shrubby tree of the U. S. Pacific coast (Rhamnus
purshianus or Rhamnus purshiana), whose bark is the
cascara sagrada, used as a mild cathartic or laxative.
Syn: cascara, cascara buckthorn, bearberry, bearwood,
chittimwood, Rhamnus purshianus.
[WordNet 1.5]
2. a deciduous tree of SE U.S. and Mexico.
Syn: false buckthorn, chittimwood, shittimwood, black haw,
Bumelia lanuginosa.
[WordNet 1.5]
3. a shrubby tree of southern U.S. (Cotinus obovatus)
having large plumes of feathery flowers resembling puffs
of smoke; -- called also American smoke tree.
Syn: American smokewood, Cotinus americanus, Cotinus
obovatus.
[WordNet 1.5]