A lake filling a volcanic crater in the Cascade mountains of south-western Oregon. With a depth of more than 600 m (1,968 ft) it is the deepest lake in the US.
Definition of Crater Lake in US English:
Crater Lake
proper noun
A lake that fills a volcanic crater in the Cascade Mountains in southwestern Oregon. With a depth of more than 1,968 feet (600 m), it is the deepest lake in the US.