Yes, specific is a Scrabble word!

Adjective

1. (sometimes followed by `to') applying to or characterized by or distinguishing something particular or special or unique

2. Stated explicitly or in detail

3. Relating to or distinguishing or constituting a taxonomic species

4. Being or affecting a disease produced by a particular microorganism or condition; used also of stains or dyes used in making microscope slides

Noun

1. A fact about some part (as opposed to general)

2. A medicine that has a mitigating effect on a specific disease