Homonym: Burr (Botany)
Burr is a term that can refer to a few different things, but it is most commonly known as a rough, prickly seed or fruit that clings to clothing and fur. These seed pods often come from plants like burdock and can be a nuisance when they attach themselves to animals or people.
In a different context, "Burr" can also refer to a sound, particularly a low, vibrating noise made by certain animals or machines. This sound is often associated with the burr of a motor or the burr of a voice, which can create a warm, resonant quality.