Driven to tears by a domestic appliance (7)

I believe the answer is:

toaster

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'domestic appliance' is the definition.

'driven to tears by a' is the wordplay.
'to tears' anagrams to 'TOASTER'.
But, I am not clear how this is indicated.

Can you help me to learn more?

(Other definitions for toaster that I've seen before include "DJ" , "Kitchen device" , "Bread griller" , "Man speaking up at table" , "one that suggests health" .)

I've seen this clue in The Irish Independent.

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