fed‧e‧ral W1 AC / fed ə rəl / 形容词

1 a federal country or system of government consists of a group of states which control their own affairs, but which are also controlled by a single national government which makes decisions on foreign affairs, defence etc :

Switzerland is a federal republic.

2 relating to the central government of a country such as the US, rather than the government of one of its states :

federal law

federal taxes