No. Where I'm from, savanna is not a forbidden word.
Savanna, scapula.
The word "forbidden" is an adjective.
A savanna is a transition zone between two distinct biomes, such as a forest and a grassland or a desert. The word savanna can mean any of a number of such transition biomes. However, a savanna is not a desert as it receives more rainfall.
Also spelt "savanna", the word hails from the 1550's Spanish sabana, earlier zavana from Taino (Arawakan) zabana.
Lions live mainly on the savanna, the grasslands of Africa.
The cookie was forbidden.
The word 'savanna' is a noun, a singular, common, concrete noun; a word for a grassy plain with a few trees; a word for a thing.
The Forbidden Kingdom is huge.She was forbidden from seeing him again.Swearing in public is forbidden.
The German translations for forbidden are:verbotenuntersagtunzulässig
I was forbidden to eat the jellybeans.
I was going to include an other word in my answer but I've been forbidden from using it.
It is forbidden to cheat during a test.