Where does “ブリカス” come from?

ブリカス (Japanese) comes from Japanese ブリテン, from English britain, from Middle English Britayne, from Old French Bretaigne, from Latin Britannia, from Ancient Greek Βρεττανία, from Ancient Greek -ῐ́ᾱ, from Proto-Indo-European -íh₂ — Creates collective nouns, which refer to groups...

ブリカス (Japanese): Britain, British person

Definitions

Britain, British person

Ancestry of “ブリカス”, step by step

ブリカス traces back through two separate lines of ancestry.

via Japanese ブリテン

Step	Language	Word	Meaning
1	Japanese	ブリテン	Britain
2	English	britain	England, Scotland and Wales in combination
3	Middle English	Britayne	Britain
4	Old French	Bretaigne	what is now known as Britain or the United Kingdom
5	Latin	Britannia	Britain
6	Ancient Greek	Βρεττανία	the British Isles
7	Ancient Greek	-ῐ́ᾱ	{{l\|en\|-ia}}; "suffix forming abstract feminine...
8	Proto-Indo-European	-íh₂	—
9	Proto-Indo-European	-h₂	Creates collective nouns, which refer to groups...

via Japanese カス

Step	Language	Word	Meaning
1	Japanese	カス	—

Every word from Proto-Indo-European -h₂ →Every word from Ancient Greek -ῐ́ᾱ →Every word from Ancient Greek Βρεττανία →