Is it appropriate to refer to the "kitchen sink" as the "lavatory"?

These are the definition of LAVATORY as per Merriam-Webster:

1: a vessel (as a basin) for washing; especially : a fixed bowl or basin with running water and drainpipe for washing
2: a room with conveniences for washing and usually with one or more toilets
3: toilet 3b


Is it wrong for me to refer to the kitchen sink as the lavatory?

Thanks for your answers.


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