something immaterial that interferes with action or progress
In theory, it's supposed to be electrified twenty- four hours a day as a deterrent to the predators that live in the woods -- packs of wild dogs, lone cougars, bears -- that used to threaten our streets.
Suddenly he falls into a Capitol accent as he mimics Effie Trinket, the maniacally upbeat woman who arrives once a year to read out the names at the leaping.
From this place, we are invisible but have a clear view of the valley, which is teeming with summer life, greens to gather, roots to dig, fish iridescent in the sunlight.