For someone (agent umi-) to throw something (theme i-) at someone or something (loc ref) with the object of hitting it or him, as to throw a spear at a wild pig, a stone at an animal; to hit someone or something (loc ref).
e'na, ume'na
Ene'na' din batu hinan bābuy ya nehella an agguy ne'na.
I threw a stone at the pig but it was crooked and didn't hit (it).
Me'na: A passive form focusing on something caused to hit something else; meaning does not include something thrown at something else.
i-: e'na; umi-: ume'na