To talk in a digressive or long-winded way.

What does Twattle mean?

: to talk idly : chatter, prate, twaddle. twattle.

Where does the word Twattle come from?

Twaddle, meaning trivial or foolish speech or writing, has been in the language since the latter part of the eighteenth century. It is found first of all in the correspondence of Mrs Mary Delany, a famous letter writer, better known for her flower compositions under the title of Hortus Siccus.