鞥心
[yì xīn]
The literal meaning is not easy to understand because these Chinese characters together do not form an actual word used in daily language context. However, in terms of separate meanings, it may be expressing something like 'difficulty heart,' possibly indicating emotional distress or a hard time. In modern netizens' unique expression, this might also suggest the speaker has difficulties in expressing love or true feelings, but please note this interpretation could still not precisely match with the origin intention behind this username, which appears quite unique and uncommon.