trade in

from WordNet (r) 3.0 (2006)

trade in
    v 1: turn in as payment or part payment for a purchase; "trade
         in an old car for a new one" [syn: {trade}, {trade in}]

from Moby Thesaurus II by Grady Ward, 1.0

34 Moby Thesaurus words for "trade in":
      bargain, barter, be in, blind bargain, buy and sell, carry, change,
      deal, deal in, dicker, do business, exchange, give in exchange,
      handle, hard bargain, horse trade, horse-trade, interchange, job,
      market, merchandise, retail, sell, swap, swap horses, switch,
      take in exchange, trade, trade off, trade sight unseen, traffic,
      traffic in, truck, wholesale