Definition of "lamented"

Opened in June of that year , the station was the southern terminus of the much-lamented Somerset and Dorset Joint Railway (the S&D or 'Slow and Dirty'), which snaked its way down from Bath.

2021 December 29, Stephen Roberts, “Stories and facts behind railway plaques: Bournemouth (circa 1880)”, in RAIL, number 947, pages 59–60