§ Beleghir ’Great River’ (RS:410,434) < beleg ’great’ (BEL-) + sîr ’river’ (SIR-), lenited -hir
This is an earlier name of Anduin. It is unclear whether -gh- represents here two sounds (g and h) or just a single voiced velar spirant [γ], which for example also appears in Morghul (see 2.46). Later names for this river are Sirvinya, Andon (see 2.11).