na.si denotes a person identified as a head or ruler of a people, household, tribe, or territory.

The term chiefly marks recognized heads of communities, families, tribes, or peoples; in Ezekiel it also designates a particular leader with defined access, offerings, and land-related responsibilities.

1. Recognized head of a people or community · dominant

   The masculine singular and plural noun forms identify people who stand as heads within larger groups. In Exodus 16:22 the APB renders the group who report to Moses as “leaders of the congregation,” while in 1 Kings 8:1 they are among the heads assembled from Israel's tribes; Genesis 17:20 similarly places twelve such figures within a great nation.

   Exodus 16:221 Kings 8:1Genesis 17:20Genesis 25:161 Chronicles 4:38Joshua 17:4
2. Leader with defined temple and land responsibilities · common

   In Ezekiel's instructions, the masculine singular form repeatedly marks a particular leader whose movements at the gate, offerings, inheritance, and possession are specified. In Ezekiel 46:2 the APB renders his approach to the gate and the offerings made there, and Ezekiel 46:18 presents a prohibition against taking the people's inheritance to oppress them.

   Ezekiel 44:3Ezekiel 45:7Ezekiel 46:2Ezekiel 46:12Ezekiel 46:16Ezekiel 46:18
3. Ruler of a named land or people · occasional

   The noun can identify a ruler in relation to a named place or people. In Ezekiel 30:13 the APB speaks of no “leader” remaining from Egypt, while Ezekiel 38:2 names Gog in a construct relation to Meshech and Tubal; Ezra 1:8 calls Sheshbazzar the “prince of Judah.”

   Ezekiel 30:13Ezekiel 38:2Ezekiel 38:3Ezekiel 39:1Ezra 1:8Ezekiel 26:16

In the Anselm Project Bible: The APB commonly presents the term as “leader,” especially for communal heads and Ezekiel's designated figure, but also uses “prince” and “ruler” in some clauses. These English choices show the verse-level presentation rather than a fixed one-to-one rendering.