Fertile means you can get pregnant or get someone pregnant. For a girl it's ovulation and menstruation and for a boy it means sperms are now live and kicking in his semen.
If an animal is fertile this means it can reproduce.
"Therefore, the ground became fertile"
earth's name means fertile soil
A fertile plain
It means "fertile" in Spanish
It means you can bear children.
I believe that you mean your fertile period, this means the time during your menstrual cycle that you are able to get pregnant. During a typical 28 day cycle a woman would be fertile from day 7-16.
An oasis
making fertile as by appliying fertilizer or manure.
An organism that is capable of reproducing or breeding.
producing or capable of producing offspring
Daire means "fertile"