ˈspīnəˌfeks noun
Etymology: New Latin, from spin- + Latin -fex (from facere to do, make) — more at spin- , do
1.
a. capitalized : a genus of chiefly Australian grasses the seeds of which bear an elastic spine — see spiny rolling grass
b. -es : any plant of the genus Spinifex
2. -es : any of several Australian grasses of the genus Triodia that often form dense almost impassable growths and have stiff and sharp-pointed leaves