what does canavar gibi mean?

Thanks xx

from the Turkish Dictionary:

canavar gibi
1. fierce; enormous.
2. like mad, very hard; excessively.

Hope it could be usefull for you

Could mean fierce monster

canavar gibi=monstrous.

but it also means "very good" very good. 

as instance:

"Bilgisayarım canavar gibi çalışıyor." 

It depends on the context... canavar can also mean ´dragon´.