[5] fyldingr (m.): A hap. leg. and an unknown species of fish. The word seems to be derived from fold ‘earth’, and hence it may denote a groundling or a flat fish (cf. ÍO: fylding(u)r). Alternatively, the correct form of this heiti might have been fylvingr, which is possibly the C variant (see Nordgaard 1912, 59), but the word is difficult to read in that ms.