R / ruscārĭus
adjective

ruscārĭus

fem. ruscāria · neut. ruscārium
(), , ruscum
for butcher; s-broom; for weeding out butcher
of or for butcher's-broom: falculae, for weeding out butcher's-broom, Cato, R. R. 11, 4; Varr. R. R. 1, 22, 5.