deadfall UK /ˈdɛdfɔːl/US /ˈdɛdfɑl/ noun4 •(US, Canada) Coarse woody debris; deadwood.Heaver forest growth on the north-facing slopes, together with considerable deadfall and soil cover, makes geologic interpretation there difficult. — 1967 •(US, Canada) A fallen tree.We should go up to the forest and see if we can find more dry deadfalls. That green wood you were trying to burn last night was all smoke and no heat. — 2012 •(US, Canada) A kind of trap for animals, consisting of a heavy board or log that falls on to the prey.Marten, wolverine, lynx, ermine, fox, mink, beaver, and land otter were plentiful in the general vicinity of Kijik and traps and deadfalls were set for them. — 1974 •(US, slang) A cheap, rough bar or saloon.They had lived down in horse barns, army “A” tents with the old blood-stains onto them, city hotels with canopy beds, woke up in back rooms of deadfalls where the bars had toothmarks end to end. — 2006 formsdeadfalls