디귿

Etymology
Coined at 1527 as 池末 in Hunmongjahoe(訓蒙字會, Introductions of the Letters for Youth), written by Choe Sejin. Each Sino-korean letter is used only for showing Korean pronunciation, as Middle Sino-korean 池(디, di) has the initial ㄷ in its pronunciation, and the meaning of 末(Middle Korean 귿(geud)) has the final ㄷ.

Noun

 * 1) digeut - the name of the third jamo,  in hangul