Definitions

1. noun

the direction or region of the south and east, especially in relation to a particular place.

“They sailed southeast from the coast of Australia.”

2. adverb

in the direction of the south and east, especially in relation to a particular place.

“The plane flew southeast from the airport.”

3. preposition

in a direction that is both to the south and to the east of something.

“The road leads southeast from the city.”