The form grelet is a cross reference to the following entry:
The debate whether the term refers to a freshwater or saltwater fish in Man Lang ants remains unresolved, but see OED grayling n. for a similar ambiguity.
The identification of the plural form grillez with this headword is tentative, as another obvious meaning could simply be a generic "small grilled fish" (e.g., whitebait, etc.).
[vcd]