the.com/register

The drawer that decides whether you're a customer or a suspect.

means To register is to formally record or enroll something in an official list; as a noun, it's that record itself, a range (of voice, of style), or the machine that tallies sales.

from From Latin 'regesta,' meaning 'things recorded,' from 'regerere' — to carry back, to bring together — built from 're-' (back) and 'gerere' (to carry, to bear). The word entered English through Old French 'registre' in the late Middle Ages, naming the bound book where names and dealings were written down. The 'cash register' sense is a much later twist, when the recording-book became a recording-machine.

first patent
James Ritty's 1879 'Incorruptible Cashier' stopped bartenders stealing
ka-ching
Bell added so owners could hear every sale
music meaning
Singers shift registers; the range your voice occupies
computing
Fastest memory exists, tiny slots inside the CPU
linguistics
Register also means how formal your speech is
for instance

wedding ring exchange — legal ceremony where two people officially become married in most countries

voter registration — process in the us and many democracies where citizens enroll to participate in elections

domain name registration — purchasing and recording a website address like google.com through icann-accredited registrars

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