A hake, Macruronus novaezelandiae (family Merlucciidae), which is a popular food fish found in deeper waters around southern Australia and New Zealand; also called hoki.
Origin
1970s.
Definition of blue grenadier in US English:
blue grenadier
adjective
A hake, Macruronus novaezelandiae (family Merlucciidae), which is a popular food fish found in deeper waters around southern Australia and New Zealand; also called hoki.