A "small clearing" refers to a small open area in a forest or wooded area where there are no trees or vegetation. It might be a small space where sunlight can reach the ground, making it less dense and easier to see. Full definition
A short hike to the top of the waterfall is well worth the effort offering a magnificent view and swimming in a series of small clear pools. (kakadutourism.com)
Maybe a few small clearing firms would have failed, and maybe some minor investment banks, but so what? (alephblog.com)
The things that I don't wear on a regular basis I keep in small clear baggies within the boxes. (styleathome.com)