British to give Her Majesty a kitchen appliance
I believe the answer is:
blender
'a kitchen appliance' is the definition.
(I've seen this before)
'british to give her majesty' is the wordplay.
'british' becomes 'b' (abbreviation e.g. in 'BBC').
'to give' becomes 'lend' (lending is a kind of giving).
'her majesty' becomes 'ER' (Elizabeth Regina).
'b'+'lend'+'er'='BLENDER'
(Other definitions for blender that I've seen before include "Good mixer" , "kitchen equipment" , "Kitchen appliance" , "used to make assets liquid?" , "Kitchen utensil" .)