The register in a CPU which contains the address of the next instruction to be executed or of an instruction to be branched to under certain circumstances

plural of register plate

In rope-making, a disc having holes arranged so as to give the yarns passing through them their proper position for entering into the general twist.

plural of register grate

A grate with a shutter behind it.

The highest register of the human voice, lying above the modal register and falsetto.

(UK, Australia, New Zealand) Alternative form of registered mail

(programming) A variable whose value is stored directly in a register for faster access.

(Britain) The local office in which births, marriages and deaths are registered, and in which civil marriages are conducted and recorded. / (archaic) An employment office.

The electronic (email) equivalent of postal "registered mail", providing senders with a register enabling the location (delivery status and reading disposition) of their emails to be tracked.