tussock
Concise Oxford English Dictionary © 2008 Oxford University Press:
tussock /ˈtʌsək/
▶noun a dense clump or tuft of grass.
– derivatives
tussocky adjective.
tussocky adjective.
– origin C16: perh. an alt. of dial. tusk ‘tuft’, of unknown origin.
'tussock' also found in these Oxford entries:

