Strong's #5387: nasiy' (pronounced naw-see')
 or nasi8 {naw-see'}; from 5375; properly, an exalted one, i.e. a king or sheik; also a rising mist:--captain, chief, cloud, governor, prince, ruler, vapour.
Brown-Driver-Briggs Hebrew Lexicon:
 ׂ / ׂ 
  nâśı̂y' / nâśi' 
 
 1) one lifted up, chief, prince, captain, leader
 2) rising mist, vapour
 
  Part of Speech: noun masculine
Relation: from H5375
  Same Word by TWOT Number:  1421b, 1421c
Usage:
This word is used 134 times:
Ezekiel 19:1: "Moreover take thou up a lamentation for  the princes of Israel,"
Ezekiel 21:12: "upon my people, it shall be upon all  the princes of Israel: terrors by reason of the sword"
Ezekiel 21:25: "And thou, profane wicked  prince of Israel, whose day is come,"
Ezekiel 22:6: "Behold,  the princes of Israel, every one were in thee to their power to shed"
Ezekiel 26:16: "Then all  the princes of the sea shall come down from their thrones, and lay away"
Ezekiel 27:21: "Arabia, and all  the princes of Kedar, they occupied with thee in lambs,"
Ezekiel 30:13: "out of Noph; and there shall be no more  a prince of the land of Egypt:"
Ezekiel 32:29: "is Edom, her kings, and all  her princes, which with their might are laid by"
Ezekiel 34:24: "their God, and my servant David  a prince among them; I the LORD have spoken"
Ezekiel 37:25: "forever: and my servant David  shall be their prince forever."
Ezekiel 38:2: "the land of Magog, the chief  prince of Meshech and Tubal, and prophesy against"
Ezekiel 38:3: "I am against thee, O Gog, the chief  prince of Meshech and Tubal:"
Ezekiel 39:1: "I am against thee, O Gog, the chief  prince of Meshech and Tubal:"
Ezekiel 39:18: "of the mighty, and drink the blood  of the princes of the earth, of rams, of lambs, and of goats,"
Ezekiel 44:3: "It is  for the prince; the prince, he shall sit in it to eat bread before"
Ezekiel 44:3: "It is for the prince;  the prince, he shall sit in it to eat bread before"
Ezekiel 45:7: " And a portion shall be for the prince on the one side and on the other side of the oblation of the holy portion, and of the possession"
Ezekiel 45:8: "shall be his possession in Israel:  and my princes shall no more oppress"
Ezekiel 45:9: "the Lord GOD; Let it suffice  you, O princes of Israel: remove violence and spoil,"
Ezekiel 45:16: "shall give this oblation  for the prince in Israel."
Ezekiel 45:17: "And it shall be  the prince's part to give burnt offerings, and meat offerings, and drink offerings, in the feasts, and in the new moons,"
Ezekiel 45:22: "And upon that day  shall the prince prepare for himself and for all the people"
Ezekiel 46:2: " And the prince shall enter by the way of the porch of that gate without, and shall stand"
Ezekiel 46:4: "And the burnt offering that  the prince shall offer unto the LORD in the sabbath day shall be six"
Ezekiel 46:8: " And when the prince shall enter, he shall go in by the way of the porch of that gate, and he shall go forth by the way"
Ezekiel 46:10: " And the prince in the midst of them, when they go in, shall go in; and when they go forth, shall go forth."
Ezekiel 46:12: "Now when  the prince shall prepare a voluntary burnt offering or peace offerings voluntarily"
Ezekiel 46:16: "the Lord GOD; If  the prince give a gift unto any of his sons,"
Ezekiel 46:17: "then it shall be his to the year of liberty; after it shall return  to the prince: but his inheritance"
Ezekiel 46:18: " Moreover the prince shall not take of the people's inheritance by oppression, to thrust them out of their possession;"
Ezekiel 48:21: "And the residue  shall be for the prince, on the one side and on the other of the holy oblation,"
Ezekiel 48:21: "and twenty thousand toward the west border, over against the portions  for the prince:"
Ezekiel 48:22: "and from the possession of the city, being in the midst of that which is  the prince's, between the border"
Ezekiel 48:22: "the border of Judah and the border of Benjamin, shall be  for the prince."