What does heche mean in spanish?

There is no Spanish Word spelled Heche. However there are a four Words that are close enough in spelling and pronunciation.

Eche - from the Word Echar - To throw, cast, put, lay, toss, drop, place

-- Eche su sombrero alla. Throw/put/cast/lay your hat over there. The exact meaning is all in the context and even gesticulation while saying the Words.

Hache - The spanish name for the letter H

Hacha - The Spanish Word for "axe"

Hacho - The Spanish name for the mountain/peninsula in Ceuta that represents the southern pillar of Hercules. (The northern pillar is the mountain/peninsula of Gibraltar.)