sissoo

from WordNet (r) 3.0 (2006)

sissoo
    n 1: East Indian tree whose leaves are used for fodder; yields a
         compact dark brown durable timber used in shipbuilding and
         making railroad ties [syn: {sissoo}, {sissu}, {sisham},
         {Dalbergia sissoo}]

from The Collaborative International Dictionary of English v.0.48

Sissoo \Sis*soo"\, n. [Hind. s[imac]s?.] (Bot.)
   A leguminous tree ({Dalbergia Sissoo}) of the northern parts
   of India; also, the dark brown compact and durable timber
   obtained from it. It is used in shipbuilding and for gun
   carriages, railway ties, etc.
   [1913 Webster]