| Subject | English | Spanish |
| med. | opera-glass finger | dedo en salchicha (athritis mutilans digiti) |
| med. | opera-glass hand | mano en gemelos |
| med. | opera-glass hand | mano en salchicha (arthritis mutilans manus) |
| industr., construct. | opera glasses | gemelos de teatro |
| industr., construct. | opera hat | sombrero de copa plegable |
| industr., construct. | spring frame for opera hats | montura de muelle para sombreros de resorte |