What is the meaning of Pian?

Yaws.

Second-person singular pronoun: you, your, yours

map

plan

nonstandard spelling of piān

nonstandard spelling of pián

nonstandard spelling of piǎn

nonstandard spelling of piàn

accusative singular of pia

soon (within a short time)

soon, quickly

pain

punishment, penalty

pain; punish

apocopic form of piano

pain

genitive plural of piana

piano

pain, pang, torture, torment, anguish, trouble, sorrow

punishment

torment, torture, pain

distress, annoy

punish

Source: wiktionary.org