Real Dictionary

seize
verb: If a government or other authority seize someone's property, they take it from them, often by force.
verb: If you seize something, you take hold of it quickly, firmly, and forcefully.
verb: When a group of people seize a place or seize control of it, they take control of it quickly and suddenly, using force.
verb: When someone is seized, they are arrested or captured.
verb: When you seize an opportunity, you take advantage of it and do something that you want to do.

seize in American English
to put in legal possession of a feudal holding
intransitive verb: to grab or take hold suddenly or forcibly
transitive verb: to take hold of suddenly or forcibly; grasp

seize in British English
to take hold of quickly; grab