| Anc.Greek | byssós | depth, Pok. 465 ð4.5.21.; bythós bottom |
| Anc.Greek | býssa | a water bird |
| Franç. | abysse | Span. abismo chasm |
| l.56 | sobissare | to dive, to sink, ML 56 |
| Ital.: Cal., Sard. | busciu | diving ducks, 48-50 |
| Ital.: Tosc. | boscio | diving ducks, 48-50 |
| Ital.reg. | busion, boussoun | Great Crested Grebe, 66 |
| Ital.reg. | sbuzzo, sbozzaval | grebes, 66-70 (+ val "low lying region, marshes") |
| Ital.: Sard. | abuzzigadita | grebes, 66-70 |
| Span.: S. Amer. | buzo | diving birds; Venezuela buzo grebes |
| Span.reg. | alambuzo, tirabuzón | grebes, 66-70 |
| Span. | bucear | to dive |
| Galice | busaco | Puffin, 73 |
| Galice: Porto do Son | busiarroque | Guillemot, 74 |
| Port. | bûsio | diving ducks, 48-57 |
| Prov. | bois, bouissé | diving ducks, 48-57 |
| Franç.: Morb. | buile | diving ducks, 48-57 |
| Anc.Greek | boýnx | (return via Prov.) diving ducks, 48-57 |