The Very Logical Prize Puzle 318

[Matakari]

Thanks to all for the help! A last one to complete...
DOWN:
5. Icelandic giantess is not the 800-pound type, one hears... (5)
G?Y?A

[fiction-factory]

Ed's probably gone home . if you get no answers here you may want to repost in Crosswords

[Mamyalynne]

Gryla

https://en.wikipedia.org/wiki/Gr%C3%BDla

[scorpiojo]

Gryla

[fiction-factory]

Thanks. Neve rheard of it. is it pronounced like gorilla then?

[fiction-factory]

I see there's an expression "800-pound gorilla"

[Mamyalynne]

Probably 'grilla' yes

[fiction-factory]

Never heard that before either!
https://en.wikipedia.org/wiki/800-pound_gorilla

[Matakari]

Thanks again for the precious help, Mamyalynne!