On some UK-based sites I occasionally see the term,bespoke. I can't understand what it means from the context. The word would mean, "add spokes to" if it were up to me, but it's not. UK resident or someone else who speaks UK English, please enlighten me.

tailored... made specifically for the person or task... not ready-made and mass-produced

It's not used in the U.S. Is it used often in the U.K.?

Not all that often these days, but it's still in use. Most (men's) suits are sold ready-made nowadays, but the more expensive are still bespoke, requiring a couple of fittings before they are ready.

As well as tailoring, it is used in other contexts; bespoke software, for example, is designed specifically for a particular company, rather than 'off-the-shelf'.