'Tsu' as a noun means 'saliva'.
Tsu means port in Japanese.
'ze tsu me tsu' ' zen me tsu'
"Boot" in Japanese is "bu-tsu"
"Tsu" is to steal.
The Japanese word for summer is 'natsu', pronounced nah-t-su. (the tsu is very similar to the German tsu)The kanji for natsu is 夏It is 'natsu,' written: 夏
The bird 'crane' is called 鶴 /tsu ru/, also written ツル /tsu ru/.
芸術 /gei ju tsu/ means 'art' in Japanese.
Tsunami
鉱物 /kou bu tsu/ is Japanese word for mineral(s).
'chu u ji tsu'
ジャン /jan/ if you mean it as a name. If you mean 'January' it is 一月 /i chi ga tsu/. The word 'January' itself can be referred to in Japanese as ジャニュアリー /ja nyu a ri/.
Nightwing is a name, thus it would be transliterated into Japanese as ナイトウィング /nai to win gu/. If you mean Japanese word for vampire bat 吸血蝙蝠 /kyuu ke tsu kou mo ri/ is the word.