Swing trading is commonly defined as a speculative activity in financial markets whereby instruments such as stocks, indexes, bonds, currencies, or commodities are repeatedly bought or sold at or near the end of up or down price swings caused by price volatility.
Additional meaning of Swing Trading:
A swing trading position is typically held longer than a day, but shorter than trend following trades or buy and hold investment strategies that can be held for weeks or months. Profits can be sought by engaging in either Long or Short trading.