This is the Cherokee character representing the the syllable 'mv'. It is an obsolete character and is not used in modern Cherokee orthography.
Original design by Sequoyah, this rendering by Michael Everson and Durbin Feeling
<a rel="nofollow" class="external text" href="https://www.unicode.org/L2/L2014/14064-n4537-cherokee.pdf">Revised proposal for the addition of Cherokee characters to the UCS</a>