1) Stock-market activity 
A cross-trade transaction is a transaction where either the buy-broker and the sell-broker are the same, or the buy-broker and the sell-broker belong to the same firm. 
A term used to denote that a trade was an agency cross or a riskless principal trade between two... <a target=_blank href='http://www.finance-glossary.com/terms/cross-trade.htm?id=1982&ginPtrCode=00000&PopupMode=false' title='Read full definition of cross trade'>more</a>
In LME terms, a trade between a broker and its customer, which is not revealed to the rest of the market but for registration purposes it is entered in the matching process by the clearing member as a buy and sell contract to and from itself.
Is a transaction that is not exposed to the public by outcry or usual trading practices. This type of matching trade is permissible provided it is done in accordance with the rules and regulations of the particular exchange and other regulatory organizations. The letter X can indicate this type of transaction on a ticker tape. It may be also used o...
cross (def. 26).