Easton's Bible Dictionary
(1.) Hebrews `oth, a military standard, especially of a single tribe (Numbers 2:2). Each separate tribe had its own "sign" or "ensign."
(2.) Hebrews nes, a lofty signal, as a column or high pole (Numbers 21:8, 9); a standard or signal or flag placed on high mountains to point out to the people a place of rendezvous on the irruption of an enemy (Isaiah 5:26; 11:12; 18:3; 62:10; Jeremiah 4:6, 21; Psalm 60:4). This was an occasional signal, and not a military standard. Elevation and conspicuity are implied in the word.
(3.) The Hebrew word degel denotes the standard given to each of the four divisions of the host of the Israelites at the Exodus (Numbers 1:52; 2:2; 10:14). In Cant. 2:4 it is rendered "banner." We have no definite information as to the nature of these military standards. (see BANNER.)
Noah Webster's New International Dictionary of the English Language
1. (n.) A flag; a banner; a standard; esp., the national flag, or a banner indicating nationality, carried by a ship or a body of soldiers; -- as distinguished from flags indicating divisions of the army, rank of naval officers, or private signals, and the like.
2. (n.) A signal displayed like a standard, to give notice.
3. (n.) Sign; badge of office, rank, or power; symbol.
4. (n.) Formerly, a commissioned officer of the army who carried the ensign or flag of a company or regiment.
5. (n.) A commissioned officer of the lowest grade in the navy, corresponding to the grade of second lieutenant in the army.
6. (v. t.) To designate as by an ensign.
7. (v. t.) To distinguish by a mark or ornament; esp. (Her.), by a crown; thus, any charge which has a crown immediately above or upon it, is said to be ensigned.