This is the 10742nd most frequent French word.
métalliques
Metallic.
Here, 'métalliques' is used as an adjective describing objects made of or resembling metal.
Les objets métalliques doivent être séparés pour le recyclage.
Metallic objects must be separated for recycling.
In this case, 'métalliques' describes the quality of the sound, comparing it to properties typical of metal.
Le son produit était métallique, révélant un défaut dans le dispositif.
The sound produced was metallic, revealing a defect in the device.
Here, 'métalliques' is attributed to colors, implying that they shine or reflect light like metal does.