Which word has a silent B at the start? [duplicate]

The word is ”Bdellium” pronounced /ˈdɛliəm/. It is a semi-transparent resin, extracted from trees in Africa. It is used as an incense, and is sometimes passed off as myrrh, due to the price difference.

It is sometimes spelt “Bdellion”, and comes from the Greek “βδέλλιον.