cilium / psyllium [ˈsɪliəm]
cilium – n. sing. of cilia – 1. short minute hair-like vibrating structure on the surface of some cells, or single-celled organisms, causing currents in the surrounding fluid; 2. eyelashes
psyllium – n. – 1. a leafy stemmed Mediterranean plantain, Plantage afra; 2. the seeds of this or several related plantains used as a mild laxative