What it means
An ordinary Steam trade is an exchange whose outgoing and incoming items are visible together in the trade window. A 'verification trade' asks you to send an item to an account or bot to prove it is not duplicated, bugged or stolen, usually for nothing in return. Steam's scam FAQ lists verification accounts as a known scam. The label does not create a real review process or guarantee return of the item.
A real-world example
An account with a moderator-like name says a rare skin must be held for five minutes. The trade offer shows the skin leaving and no item coming back. Once confirmed, the skin is under the recipient's control regardless of the reassuring chat messages.
What to do
Cancel the offer, report the requester and inspect any prior approvals or login attempts. If an item already left, gather the trade ID and contact Steam Support through its known site. Do not pay a recovery intermediary or accept a new 'reversal' trade from a stranger.
The distinction that matters
Steam trade confirmations help prevent unauthorized transfers, but they can be approved by a deceived owner. Steam says scammed items generally are not restored under its policy; some specific items have trade-protection rules, but do not assume that every item can be reversed.
Steam verification-trade warning Steam item policy