What is "elaborator"

Usage examples of "elaborator".

But the idea of this dried-up pedant, this elaborator of small explanations about as important as the surplus stock of false antiquities kept in a vendor's back chamber, having first got this adorable young creature to marry him, and then passing his honeymoon away from her, groping after his mouldy futilities (Will was given to hyperbole)-- this sudden picture stirred him with a sort of comic disgust: he was divided between the impulse to laugh aloud and the equally unseasonable impulse to burst into scornful invective.