They are just called "Drop capitals".
This can be called a 'Dropped Capital.'
Uppercase letters are ABCDEFGHIJKLMNOPQRSTUVWXYZ. They are also commonly called capital letters, as opposed to the lowercase letters abcdefghijklmnopqrstuvwxyz. The letters are so named because hundreds of years ago typesetters had large racks full of letters which had to be manually put in place when producing a page of a newspaper or a book, and the capital letters were commonly stored in the upper case of the rack with the small letters in the lower case.
It is called a flechette, diminutive of fleche in french.
inferno
Blaze
A large container name three letters long could be box or bin.
Lioness
A drop cap
The letters at the beginning which are larger than the others? They're called an Initial. From Latin; initialis, "the start". They are just larger letters, sometimes they put drawing inside them.This is completely wrong, and was totally unhelpful. I don't know if this is the official "Name" of the large capital letter that begins chapters, but in WORD it's called a Dropped Capital. or Dropcap. Word will automatically insert a drop cap into your paragraph if you click the insert tab, and under the text group pick Drop Cap.
Spain divided their lands in to large territories that they called provinces. The capital and largest city in Spain is Madrid.
Lioness. Tigress.
A large parrot is called a Hyacinth Macaw!