SOM \sohm\ n. the basic monetary unit of Uzbekistan and Kyrgyzstan

Although this currency is a pretty handy three letter word in its own right, what I like most about it is the smaller unit into which it is divided: the TYIYN (pronounced \TEE.yin\ and sometimes spelled TYIN), which is equal to 1/100th of a som…

Tyiyn is the only word in the entire Scrabble lexicon that contains the awkward letter sequence -YIY-.