How common is it for 가시나 to have a meaning other than "girl"/"female"? Is it disrespectful to use?

Question

Answer

가시나 has several meanings depending on the context.
There are 3 common usages.
1) noun. it means "little girl". it is a dialect  of 계집애"little girl"
   Not much disrespectful but very informal word used for addressing between intimate female friends or mother to daughter.

2) verb. it means "t​horn grows". it is contracted form of 가시가 나. 가시(thorn) + 가(subject particle) +  나(grow)"
   잎에 가시 나 The thorns grow on the leaf

3) verb. it means "Does she/he go". 가(go) + 시(honorific particle)  + 나(interrogative ending suffix)
   선생님은 언제 집에 가시나? When  the teacher goes  home?

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