Crossword Genius

Invest capital in kitchen equipment (4)

Ross

I believe the answer is:

sink

I'm a little stuck... Click here to teach me more about this clue!

This could be a double definition.

'invest' is the first definition.
(thesaurus)

'capital in kitchen equipment' is the second definition.
The definition and answer can be both man-made objects as well as being singular nouns.
Maybe they are linked in a way I don't understand?

Can you help me to learn more?

(Other definitions for sink that I've seen before include "Washing facility" , "Plummet" , "Invest capital in - kitchen basin - founder" , "Drop beneath the surface" , "Washbasin" .)

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