What is the meaning of Jake?

Adequate; satisfactory; acceptable.

A juvenile male turkey.

A police officer, a law enforcement officer (sometimes especially one on foot rather than in a patrol car).

Jamaica ginger.

A Discordian prank involving a large number of people sending bizarre letters or parcels to a targeted individual.

To play a Discordian prank on (somebody), involving a large number of people sending bizarre letters or parcels to that person.

alternative form of jakke

broken ice, icefloe

Source: wiktionary.org