To take hold of something suddenly and forcibly. The police officer seized the suspect's arm to prevent him from escaping.
To take possession of something by legal right or authority. The government decided to seize the property due to unpaid taxes.
To take advantage of an opportunity eagerly and decisively. She seized the chance to study abroad when it was offered to her.
To capture or take control of a place or situation by force. The rebels managed to seize the city after a long battle.
To affect someone suddenly and powerfully, often used in the context of emotions or sensations. A sudden fear seized him as he realized he was lost.
For a mechanism or moving part: to stop functioning because the parts jam or lock together. The engine seized after the oil leaked out.