| Sbc. | buk, bucak | Bittern, 125 |
| Sbc. | bucak | Eagle Owl, 247 |
| Sbc. | bukati | to roar |
| Russian | buxat' | to emit a deep sound |
| Slavic | byk | bœuf; Bittern, 125 |
| Lith. | bukSteti | to produce a deep sound |
| Lith. | bukas | Bittern, 125 |
| Lith. | bukauti | din, uproar |
| Anc.Greek | ibykter | leader in a war song |
| Mod.Greek | bûkinon | horn (musical instrument) |
| Cat. | botzina | id. |
| Esp., Ital. | bucina | trumpet |
| Sbc. | buSinac | Bittern, 125 |
| Sbc. | buciti | to make noise |
| Bulg. | bucena | to buzz, tonner |
| Pol. | baczyc | to moo |
| Slavic | bucen et var. | Bittern, 125 |
| Pol. | bocian et var. | White Stork, 127 |
| Lith. | busilas et var. | White Stork, 127 |
| Ukr. | bucilo | Bittern, 125 |
| Russian | buca | din, uproar |
| Franç. | boucan | din, uproar |
| Germ. | böken | to burp |
| Franç.: Anjou | beuquer | roter, FEW 21: 318 |
| Roman. | boci | to cry, weep |
| Ital. | bociare | to bark, divulge |
| Roman.: Trans. | boitchie | tinter, FEW 23: 201 |
| Franç. | bakoe | tocsin, FEW 23: 148 |
| Franç.: Landrem. | bauker | tinter les cloches, FEW 23: 157 |
| Franç.arg. | baucher | se moquer, FEW 22: 73 |
| Gael.S. | lach buchainn | Long-tailed Duck, 55 |
| Gael.S. | buachaille | wailer (whence bhuachaill "a herd, a shepherd") |
| Gael.S. | bhuachaill (muir) | Great Northern Diver, 65 (i.e. the "wailer", not "shepherd") |
| Franç.: Guignicourt | bacailler | ronchonner, FEW 22: 79 |
| Franç.: Vinzelles | bacayá | haleter, FEW 21: 314 |
| Franç.: Liège | bacara | din, uproar, FEW 23: 196 |
| Franç.: Gaumois | baccara | disputer, FEW 22: 76 |
| Franç. | baccara | jeu de cartes (où l'on est enclin à se disputer bruyamment, cf. pétanqueð5.22.1.) |