| Subject | English | Spanish |
| nat.sc., agric. | american dagger nematode | vector del virus en durano (Xiphinema americanum) |
| nat.sc., agric. | dagger eelworms | nematodo (Xiphinema) |
| fish.farm. | dagger-tooth pike-conger | morenocio dentón (Muraenesox cinereus) |
| nat.res., agric. | grey dagger moth | noctua psi (Acronicta psi) |
| gen. | he plunged the dagger into his chest | se clavó el puñal en el pecho |
| nat.sc., agric. | nemas dagger | nematodo (Xiphinema) |
| gen. | to look daggers at | fulminar a alguien con la mirada (smb.) |