| Subject | English | Spanish |
| med. | artificial leech | sanguijuela artificial |
| med. | Heurteloup artificial leech | sanguijuela artificial de Heurteloup |
| vet.med. | horse leech | sanguijuela borriquera Haemopis sanguisuga |
| fish.farm. | leech line | trapa |
| fish.farm. | leech line | viravira |
| fish.farm. | leech line | parpallón |
| fish.farm. | leech line | leva |
| gen. | leeches for medical purposes | sanguijuelas para uso médico |
| vet.med. | medicinal leech | sanguijuela Macrobdella decora, Hirudo Medicinalis |