Does female ejaculate semen

No. The function of semen is to nourish sperm to keep them alive long enough to make a female pregnant, and it is produced and ejaculated by the male only. The only exception to this is in primitive species such as snails and slugs which are hermaphrodites. Adult snails and slugs have both male and female reproductive organs and when they mate they exchange sperm so that each goes and lays eggs. This is not truly an example of semen from a female because slugs and snails are neither male nor female.