The name Fenegrò may derive from the Latin fenegrorum, fenegrolium, or finis agrorum which means end of cultivated fields. This area, in fact, marked a boundary between cultivated plain and the wastelands of Turate and Cirimido and the eastern hills at Guanzate, Veniano and Appiano. Its origins seem to be very old. In 1836, the tillage of some moorlands brought to the discovery of several terracotta cinerary urns probably dating to the period of the Roman rule. In 1173 Fenegrò was controlled by the monks of S. Simpliciano in Milan. As a matter of fact, the village has been called 'Badia di Fenegrò' (Fenegrò's Abbey) till the 19th century. It came then under the control of the Order of the Humiliati who had two 'homes' there. Thanks to this 'sort' of nuns and monks, the region saw a rapid improvement in the economy owing to the development of wool production. The territory of Fenegrò was then handed over to the Castiglioni family.

Monuments:

Parish church of St. Maria Nascente - The church's orientation was completely changed in 1756 when the building was reconstructed. Inside, the oldest work is a wooden statue of the 'Madonna della Cintura'. There is also a highly-precious canvas portraying the 'Three Mary under the Cross.'