English

gigabuck

From giga- + buck.

Formed from giga- + buck

Ancient Greek γίγας ‘giant’

English giga-

Proto-Indo-European *bʰuǵ- ‘buck, he-goat’

…

Proto-Germanic *bukkô

Proto-West Germanic *bukkō

Old English bucca ‘he-goat, a buck’

Middle English bukke ‘male goat’

English buck

Today it means

noun A billion dollars.

Language periods are conventional ranges, not dates for this word.

Etymograph / gigabuck