Definition of "deadfall"

Heaver forest growth on the north-facing slopes, together with considerable deadfall and soil cover, makes geologic interpretation there difficult.

1967, Calvin S. Bromfield, “Introduction”, in Geology of the Mount Wilson Quadrangle, Western San Juan Mountains, Colorado: […] (Geological Survey Bulletin; 1227), Washington, D.C.: United States Government Printing Office, page 6

It [the wolverine] is so cunning as rarely to enter a deadfall itself, but will carefully pull it to pieces and then eat the bait in safety. I was informed by hunters at Selkirk Settlement that they sometimes lost the successful result of several days' trapping by a single wolverine, which, following their path, would pull down every deadfall, or destroy any animal already caught.

1859, Robert Kennicott, “The Quadrupeds of Illinois Injurious and Beneficial to the Farmer. Steedman, printer, page 246

The beaver trap is a deadfall of considerable weight, nicely adjusted over the animal's road or track, frequently on a dam. […] The animal passing under the deadfall has to step on a little stick raised an inch or two above the ground, and this brings down the deadfall on its back.

1876, John J. Rowan, “The Trapper”, in The Emigrant and Sportsman in Canada. […], London: Edward Stanford, […], page 369

It was a week after the taking of the black fox that Skookum Bill, on a short exploring trip a few miles west of their cabin, came across a deadfall which held a dead marten. He took the marten, and, when he returned, said to Dobbs: "I didn't know you'd built any deadfalls in the timber past the big draw?"

1922 November 25, A[rthur] M[urray] Chisholm, “A Thousand a Plate”, in Western Story Magazine, volume XXX, number 4, New York, N.Y.: Street & Smith Corporation, chapter II, page 90, column 2

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, Alaska Planning Group, United States Department of the Interior, “History and Archeology”, in Final Environmental Statement: Proposed Lake Clark National Park, Alaska, Washington, D.C.: United States Government Printing Office, part II (Description of the Environment), section A (Existing Environment), pages 61–62

Dens of the description of the "Tapis Franc," and the "deadfalls" of San Francisco and Sacramento, are now matters of history only, and it seems beyond the bounds of probability that similar haunts of vice, and the brutal and lawless scenes there enacted, will ever again be permitted to disgrace our country, and the name of civilization.

1873, [John O’Connor], “Wolf-traps—Continued”, in John Morris, editor, Wanderings of a Vagabond. An Autobiography, New York, N.Y.: Published by the author, page 366

[…] I was an occasional dram-drinker at their saloon. I was never imposed upon by them with bad liquor, nor in any manner cheated there. I did not learn they kept loaded dice, marked cards, or any back-room "deadfall"—to rake the pockets of fuddled or drugged customers.

1879 November, C[harles] E[dward] Pickett, Land-gambling versus Mining-gambling. An Open Letter to Squire P. Dewey, Relative to His Participation in the Land-gambling of San Francisco in the Early Days. From One Who Knows, 2nd edition, San Francisco, Calif.: [s.n.], page 9

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, Thomas Pynchon, “Iceland Spar”, in Against the Day, New York, N.Y.: Penguin Press, page 360