[2, 4] sylg Grímnis hanga ‘the drink of the Grímnir <giant> of hanged ones [= Óðinn > POETRY]’: So Kock (NN §489). This kenning is not unproblematic, because Grímnir is a name for Óðinn, and ‘the drink of Grímnir <= Óðinn> of hanged ones’ is hyperdetermined. But as Kock points out (NN §489), there are such parallels as geir-Skǫgul ‘spear-Skǫgul’ i.e. ‘valkyrie’ (where Skǫgul is also the name of a valkyrie; for other examples, see Meissner 397), and Grímnir is also the name of a giant (LP: Grímnir 2; the solution preferred in this edn).