simple past tense and past participle of trade in

Full of trade; busy with commerce.

(idiomatic) As a profession; professionally.

Of a product, produced for sale in the ordinary bulk retail trade and hence of only the most basic quality.

(transitive, intransitive) To engage in trade. / (finance, intransitive, copulative) To be traded at a certain price or under certain conditions.

(uncountable) Buying and selling of goods and services on a market. / (countable) A particular instance of buying or selling. / (countable) An instance of bartering items in exchange for one another.

To give a piece of merchandise as part of the payment or trade for something new.

property used as part payment for a new purchase / a transaction including such payment

simple past tense and past participle of trade

(Ireland, Britain) The sale of alcoholic drinks for consumption on the premises.