Crossword Genius

It drains off the water when royal egg is cooked (8)

Ross

I believe the answer is:

gargoyle

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'it drains off the water' is the definition.
The definition suggests a singular noun which matches the answer.

'royal egg is cooked' is the wordplay.
'is cooked' is an anagram indicator (letters cooked into a new form).
'royal'+'egg'='royalegg'
'royalegg' with letters rearranged gives 'GARGOYLE'.

'when' is the link.

Can you help me to learn more?

(Other definitions for gargoyle that I've seen before include "Spout ending in a grotesquely carved figure" , "Ugly carved figure on a building" , "Grotesque architectural statue" , "Ugly person's" , "Grotesquely carved waterspout" .)

I've seen this clue in The Globe and Mail.
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