For the writer (seller) of a call option, it represents an obligation to sell the underlying security at the strike price if the option is exercised. The call option writer is paid a premium for taking on the risk associated with the obligation.
Definition of gonad. : a reproductive gland (as an ovary or testis) that produces gametes.
Ovaries are the small gonads of the female reproductive system. They are responsible for egg production, ovulation, and hormone production. While they are important for reproduction, women can live with one or no ovaries, though they will not be able to reproduce without them.