[3] hroðgás (f.) ‘barnacle goose’: The correct form is probably hrotgás (cf. New Norw. rotgås ‘barnacle goose’). If so, hrotgás probably refers to the same bird as hrota ‘barnacle goose’ (see fjallrota, st. 5/6 and Note there). Alternatively, the first element in this name could be derived from hroði m. ‘phlegm’ (see ÍO: hroði 2; Skj B and Skald: hróð-).