nemesis
nounA source of harm or ruin.
nounRetributive justice in its execution or outcome.
nounAn opponent that cannot be beaten or overcome.
nounOne that inflicts retribution or vengeance.
nounThe goddess of retributive justice or vengeance.
nounIn Greek myth, a goddess personifying allotment, or the divine distribution to every man of his precise share of fortune, good and bad.
nounRetributive justice.
noun[NL.] In zoology, a genus of crustaceans.
nounThe 128th planetoid, discovered by Watson in 1872.
proper nounThe goddess of retribution or vengeance; hence, retributive justice personified; divine vengeance.