The phrase trade-last, for one—meaning a kind of quid pro quo—”I'll say something nice about you if you say something nice about me first”—is found scattered throughout the country, especially among older speakers.    From Wordnik.com.  [languagehat.com: ALASKAN TRADE.] Reference

Um. Once at school one of the girls said she had a 'trade-last' for me, and after I had searched the closets of memory and dragged out that some one had said she had pretty eyes, dressed it up until this some one had called her ravishingly beautiful -- after all that conscientious dishonesty what does she tell me but that some one had said.    From Wordnik.com.  [The Visioning] Reference

//symbol-last trade-last trade time - Open-High-Low-Change (real time).    From Wordnik.com.  [eggheadcafe.com articles] Reference