tilly/ˈtɪli/Etymology* (given name, nickname): Shortened from Matilda, + -y. * (surname): The surname may also have origins as a matronymic from Matilda.tilly means A diminutive of the female given name Matilda. Lexicurio rates it Rare gem — a strength score of 80 out of 100.nameA diminutive of the female given name Matilda.“Tilly's name is Matilda. It was typical of Mum and Dad that they wouldn't let her be called Tilly when she came to them because that was the unusual shortening of Matilda, the unconventional one, and you never did unconventional things, you never did things to draw attention to yourself. So they called her Matty.”A surname transferred from the given name.A number of places in France.A surname from Old French.“.”nounAn extra product given to a customer at no additional charge; a lagniappe.“Myles: "Indeed your Honour may safely say so : Iwas ploughing away […] when I bethought how I forgot to tell little Jem, when he'd be buying my pen'orth of snuff, to be sure to get it in two separate ha'porths, the way he'd have the two tillies. So what could Ido but run home, to […] go myself for the snuff, and be sure to get my tillies.”A small open-backed truck.“After a fortnight's careful nursing my leg healed and I was packed off in a tilly (utility truck) with my kit-bag to join my comrades at Fairmilehead.”adjContaining till (unsorted glacial sediment).