What does that mean??

that   
pronoun and adjective, plural those; adverb; conjunction

–pronoun
1.
(used to indicate one または もっと見る persons, things, ideas, states, events, times, remarks, etc., as pointed out または present, mentioned before, supposed to be understood, または によって way of emphasis): That is her mother. After that we saw each other.
2.
(used to indicate one of two または もっと見る persons, things, etc., already mentioned, referring to the one もっと見る remote in place, time, または thought; opposed to this ): This is my sister and that's my cousin.
3.
(used to indicate one of two または もっと見る persons, things, etc., already mentioned, implying a contrast または contradistinction; opposed to this ): This suit fits better than that.
4.
(used as the subject または object of a relative clause, especially one defining または restricting the antecedent, sometimes replaceable によって who, whom, または which ): the horse that he bought.

–adjective
5.
(used to indicate a person, place, thing, または degree as indicated, mentioned before, present, または as well-known または characteristic): That woman is her mother. Those little mannerisms of hers make me sick.
6.
(used to indicate the もっと見る remote in time, place, または thought of two persons, things, etc., already mentioned; opposed to this ): This room is his and that one is mine.
7.
(used to imply mere contradistinction; opposed to this ): not this house, but that one.

–adverb
8.
(used with adjectives and adverbs of quantity または extent) to the extent または degree indicated: that much; The 魚 was that big.
9.
to a great extent または degree; very: It's not that important.


;D

It means that person is retarded.

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