WordNet
n. a line or series of traps
Wikipedia
A trap line is used by some orb weaver spiders as a mechanism to alert them of a newly captured prey in their web.
They spin a line of silk and attach it to the center of the web. The spider then stays near it and waits for their prey, most likely a small insect such as a fly or mosquito, to stick to their web. The prey lands in the web and vibrates the line. The alerted spider then travels to the prey and makes preparations to eat it.
Usage examples of "trap line".
During the early 1980s, while still a member of the investigations team, Hiaasen began to write fiction, spending evenings and weekends co-authoring, with the late William Montalbano, three novelsthe recently reprinted Powder Burn, Trap Line, and A Death in China.
You shoulda seen him when we cut his trap line, like a little kid who'd lost his puppy.
Coming back from checking his trap line he had felt the storm-charged air descend on the Wran: hot, angry air that came and would not go away, like a marsh crocodile circling a leaking skiff.
Why, back to home we'd had the cows milked by this time, or if 'twas winter, we'd be out runnin' a trap line.
It was Roxie, Joe Loustalot's inseparable canine companion on his trap line rounds.
Following the trap line diligently, Mark sprang every wire noose and ripped it out.
Now, look carefully under you and see how that booby-trap line is attached to the floor.