What is "clacks"

Usage examples of "clacks".

Before the clacks, a letter from Ankh-Morpork would take more than a two weeks to get to him, and so no one worried if he took a day or two to answer it.

Suddenly the clacks towers are now on Borogravian soil - or mud, anyway -so the idiots burn them down for religious reasons.

Because we stopped the mail coaches going over our country and tore down their clacks towers, which are an Abomination unto Nuggan.

And he says that picture he took is going on the clacks from the nearest tower tonight.

The one with the clacks tube was already dropping it and reaching for a sword, but Jackrum was bearing down on him like a landslide.

Well, the one on the left started to run and the one in the middle was dropping the clacks tube and reaching for his sword, but the one on the right thought that putting something into his mouth was more important even than fighting or running away.

We send things by pigeon to our office in the keep and then by clacks from the nearest trunk tower.

And would I be right in my surmise that the box on the top, which opens its shutters once a second, is a kind of system, er, clock that makes certain the whole clacks line keeps in step?

The intervals between the sharp sounds grew shorter until she was beating a frantic tattoo, a flurry of ratcheting clacks that signaled high drama just ahead.

The one surviving man, who had been operating the clacks, groaned and tried to move.