xarmi -xarm- experimental gismu

x1 is a starfish/sea star/sand dollar (radially symmetric invertebrate) of species/variety x2

May include other echinoderms. See also mumbircurnu, narbogda'u.

In notes:

etkinu
x1 is/are Echinus/sea urchin of species x2
jesxarmi
x1 is a sea urchin of species x2.