Dutch word bok comes from Proto-Indo-European *bʰuǵ- (Buck, he-goat.), Proto-Indo-European *bʰugo-, Proto-Indo-European *bhug̑-
| Dictionary entry | Language | Definition |
|---|---|---|
| *bʰuǵ- | Proto-Indo-European (ine-pro) | Buck, he-goat. |
| *bʰugo- | Proto-Indo-European (ine-pro) | |
| *bhug̑- | Proto-Indo-European (ine-pro) | |
| *bukkô | Proto-Germanic (gem-pro) | |
| buk | Old Dutch (odt) | |
| *bukk | Frankish (frk) | Buck. |
| buc | Old Dutch (odt) | |
| boc | Middle Dutch (dum) | Buck, male goat. |
| bok | Dutch (nld) | (gymnastics) vaulting horse. (pejorative) churl, grouch. (pejorative) oaf, bumpkin. (printing) job case, type case. A crane on legs. Box, perch (driver's seat on a carriage). Male goat, buck, billy. Sawbuck, buck. |