A Transaction in Coinbase Wallet involves sending or receiving cryptocurrency directly through the wallet interface. Users can seamlessly manage their assets, execute trades, or interact with decentralized applications (dApps). The wallet provides a secure and private environment for transactions, ensuring that users maintain control over their private keys and funds. With Coinbase Wallet, users can easily access their digital assets and perform transactions without needing to rely on third-party services, making it a versatile tool for managing and using cryptocurrencies.