the word 'tulle' is a toponym, borrowed directly from french in the early 19th century. it is named after the city of tulle in southern france, which was a notable early center for the manufacture of this specific type of fine net fabric. the term entered english to denote the product itself, following a common pattern where a place name becomes associated with a distinctive good produced there. as a borrowed simplex, its meaning is not derived from the combination of smaller meaningful parts within english.

this is a loanword adopted as a simplex unit from french.