Wikipedia
Thumbling
"Thumbling'' and "Thumbling's Travels" (also known as "Thumbling as Journeyman") are two German fairy tales collected by the Brothers Grimm. They are tales number 37 and 45 in the collection and are related to the English Tom Thumb, whose title the Grimms' stories often share when translated into English.
The two stories do not feature the same character. The original German names for the two characters are "Daumsdick" (Literally, "Thumb-thick") for the former, and "Daumerling" for the latter.
It is Aarne-Thompson type 700, Tom Thumb.
Usage examples of "thumbling".
I hear a great voice of thumbling and rumbling in the stone, and your wife runs out of her chamber and seems to leap over the gallery-rail and to lie as dead.