Special
adverb, noun, な adjective, の adjective
Something that is special and separate from the rest is, well, special.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
特別な事
a special matter
特別な物
a special thing
特別な日
a special day
これは特別なネックレスなんです。
This is a special necklace.
社長がわざわざオフィスに来たなんて何か特別なミーティングでもあったんですか？
Was there a special meeting or something that the president bothered to come all the way to the office for?
この車の特別仕様の在庫はありますか？
Is there a special edition of this car?