A whale is a holder or trader large enough to move markets or dominate liquidity.
Whale wallet flows can precede volatility. Exchange inflows sometimes signal sell intent, with many false positives.
In research workflows, Whale is usually interpreted with Retail trader, On-chain analysis, Open interest, and Liquidity rather than as a standalone signal. Operational security mistakes are irreversible on most public chains. Verify networks and destinations before large transfers.