Meaning of Mastering
Unknown / অজানা / अज्ञात
a person with the ability or power to use, control, or dispose of something: a master of six languages; to be master of one's fate.
an owner of a slave, animal, etc.
an employer of workers or servants.
the male head of a household.
a person eminently skilled in something, as an occupation, art, or science: the great masters of the Impressionist period.