The room at the top of the house where Ron slept looked much as it had the last time that Harry had come to stay: the same posters of Ron’s favorite Quidditch team, the Chudley Cannons, were whirling and waving on the walls and sloping ceiling, and the fish tank on the windowsill, which had previously held frog spawn, now contained one extremely large frog.
’You deserve to be boiled in frog spawn…… ’ Ouch!
There are no more uses of "spawn" in the book.
Show samples from other sources
She had spawned one son, Francis, who in Jean Louise’s opinion looked and behaved like a horse, and who long ago left Maycomb for the glories of selling insurance in Birmingham.