Such a rabbit is like a corgi (5)

I believe the answer is:

welsh

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'corgi' is the definition.
('Welsh corgi' can be a synonym of 'corgi')

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for welsh that I've seen before include "Coming from Swansea?" , "Cymric" , "Evade obligation" , "and 14 Down: Melted cheese on toast" , "Native to, eg, Cardiff" .)

I've seen this clue in the Evening Standard.

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