Verb
(intransitive, Britain, business) To become less by being sold.
Don't order any potato cakes for 3 days while what we have sells down.
(transitive, Britain, business) To reduce by selling.
Don't order any potato cakes for 3 days while we sell down our stocks., or
Don't order any potato cakes for 3 days while we sell our stocks down.
sell down (third-person singular simple present sells down, present participle selling down, simple past and past participle sold down)
(idiomatic) To betray a person; to conspire against someone for personal gain.
sell-down