Do eyebrows grow back?

According to this study

Fezza JP, Klippenstein KA, Wesley RE. Cilia regrowth of shaven eyebrows. Arch Facial Plast Surg. 1999 Jul-Sep;1(3):223-4.

eyebrow regrowth after complete shaving is possible. Five brave patients had one eyebrow shaven and within 4 months all but one had full regrowth. The fifth patient required an extra couple months for full regrowth. Because of the small sample size, no conclusions can be drawn as to the implications for widespread eyebrow shaving. However, this should debunk the commonly held myth that eyebrows don't grow back.