This is the 969th most frequent French word.
touche
"Touch" or "key" (on a keyboard or musical instrument); also "touché" to concede a point in an argument or duel.
In this case, 'touche' is used as a noun, meaning 'touch' in the sense of a detail or finishing aspect.
La touche finale de son travail est parfaite.
The final touch of his work is perfect.
Here, 'touche' refers to a button or a key, commonly used for keys on a keyboard or buttons in devices.
Appuie sur la touche pour continuer.
Press the button to continue.
Here, 'touche' represents the verb form 'toucher' conjugated in the third person singular, expressing the action of touching.