Pls bear in mind, when introducing your glossary entry, that your selected option also relates to the following, which is not what your proposal "clindamycin vaginal ovules" means.
"A **vaginal pessary** is a removable device placed into the vagina. It is designed to support areas of pelvic organ prolapse.
There are a variety of pessaries available, made of rubber, plastic, or silicone-based material."
http://www.webmd.com/urinary-incontinence-oab/vaginal-pessar...
The above could lead to confusion among users. There are a lot of significant hits from Google leading in this direction...
Example:
http://www.femalepelvichealth.com.au/vaginal_pessaries.html
Regards.