Unfortunately, as you found out from Google, the word 'soma' has taken on other meanings in the decades since Brave New World was written, and it somewhat clouds the intended meaning when I include that in a post.
Soma is a muscle relaxer that works by blocking pain sensations between the nerves and the brain. Soma is used together with rest and physical therapy to treat injuries and other painful musculoskeletal conditions. Soma may also be used for other purposes not listed in this medication guide.
Unfortunately, as you found out from Google, the word 'soma' has taken on other meanings in the decades since Brave New World was written, and it somewhat clouds the intended meaning when I include that in a post.