Technical name for the holes (missing electrons) in a p-type semi-conductor? When a pure silicon crystal (giant lattice) is doped with boron atoms one of the four covalent bonds made between one boron atom and four surrounding silicon atoms is missing an electron as boron has three valence electrons. Is there a technical name for these holes (lack of electron in a covalent bond).

Is it acceptable to say that these holes are indirectly the charge carriers as they are allowing the movement of the electrons? 

Furthermore, could you say that these holes are positively charged?(Hence the name p-type semi-conductor?).
Yes, the technical name is, in fact, an electron hole (typically referred to as simply a hole). It is considered suitable to describe these holes as electric charge carriers with a positive charge that is equal in magnitude to the negative charge of an electron. So, you have actually answered each one of your questions!