Home › Words › L › lumbermilllumbermill/ˈlʌmbɚˌmɪl/lumbermill means A mill for processing lumber and logs; a sawmill.lumbermill is pronounced /ˈlʌmbɚˌmɪl/.EtymologyFrom lumber + mill.nounA mill for processing lumber and logs; a sawmill.Definitions & examples from Wiktionary (CC BY-SA 3.0).