Fish eggs (3)
'fish eggs' is the definition.
(synonyms)
This is all the clue.
(Other definitions for roe that I've seen before include "eg Caviare" , "Lobster's ripe ovary" , "Food from fish" , "Caviar" , "Swift runner" .)
'fish eggs' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for spawn that I've seen before include "generator" , "Mass of fish eggs" , "Engender" , "Generate; fish eggs" , "Eggs deposited by fish" .)