pine needle
From Longman Dictionary of Contemporary Englishpine needleˈpine ˌneedle noun [countable] HBAa leaf of the pine tree, which is thin and sharp like a needleExamples from the Corpuspine needle• I really believe I could have hit a mosquito in the eye with a pine needle at thirty paces.• Bursting from the trees ahead of him, three black shapes came hurtling towards him over the pine needle floor of the clearing.