Is there a standard way to translate phrases like "a _ used for _".

Example: I'm trying to define 'Ohr' in German as "organ used for hearing". Based on what I've read, I've come up with a few possibilities, but I'm not sure which to prefer:

1. Organ für Gehör benutzt

2. Organ für das Gehör benutzt

4. Organ zum Gehör benutzt

5. Organ benutzt zu hören

Are any of the above correct "_ used for _" translations? Also, does a construction like that sound weird in German?

Is there a standard way to translate phrases like "a _ used for _".

Example: I'm trying to define 'Ohr' in German as "organ used for hearing". Based on what I've read, I've come up with a few possibilities, but I'm not sure which to prefer:

1. Organ für Gehör benutzt

2. Organ für das Gehör benutzt

3. Organ zum Gehör benutzt

4. Organ benutzt zu hören

Are any of the above correct "_ used for _" translations? Also, does a construction like that sound weird in German?

Is there a standard way to translate structures like "a _ used for _".

Example: I'm trying to define 'Ohr in German as "organ used for hearing / to hear". Based on what I've read, I've come up with a few possibilities, but I'm not sure which to prefer.

1. Organ für Gehör benutzt

2. Organ für das Gehör benutzt

4. Organ zum Gehör benutzt

5. Organ benutzt zu hören

Is any of the above a correct "_ used for _" translation? Also, does a construction like that sound weird in German?

Is there a standard way to translate phrases like "a _ used for _".

Example: I'm trying to define 'Ohr' in German as "organ used for hearing". Based on what I've read, I've come up with a few possibilities, but I'm not sure which to prefer:

1. Organ für Gehör benutzt

2. Organ für das Gehör benutzt

4. Organ zum Gehör benutzt

5. Organ benutzt zu hören

Are any of the above correct "_ used for _" translations? Also, does a construction like that sound weird in German?