Of course I know what it means — the word servitude is believed to have first originated in the early-to-mid 15th Century and originally referred to slavery, based on the late latin word servus. In later years it's been used in many different situations, from domestic workers to military service and ordinary employment. The Master-Servant dynamic is also very prevalent within the BDSM community, with the terms referring to the dominant versus the submissive partner.
So... yes, I do know what servitude is. It's rather that the concept can be applied to a variety of situations, and seeing as most of us aren't even from the same dimension let alone similar cultures I thought it would be better to play it safe.