The Collaborative International Dictionary of English v.0.48:

Dan \Dan\ (d[a^]n), n. [OE. dan, danz, OF. danz (prop. only
   nom.), dan, master, fr. L. dominus. See Dame.]
   A title of honor equivalent to master, or sir. [Obs.]
   [1913 Webster]

         Old Dan Geoffry, in gently spright
         The pure wellhead of poetry did dwell.   --Spenser.
   [1913 Webster]

         What time Dan Abraham left the Chaldee land. --Thomson.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Dan \Dan\, n. [Etymol. uncertain.] (Mining)
   A small truck or sledge used in coal mines.
   [1913 Webster]

Easton's 1897 Bible Dictionary:

Dan
   a judge. (1.) The fifth son of Jacob. His mother was Bilhah,
   Rachel's maid (Gen. 30:6, "God hath judged me", Heb. dananni).
   The blessing pronounced on him by his father was, "Dan shall
   judge his people" (49:16), probably in allusion to the judgeship
   of Samson, who was of the tribe of Dan.

     The tribe of Dan had their place in the march through the
   wilderness on the north side of the tabernacle (Num. 2:25, 31;
   10:25). It was the last of the tribes to receive a portion in
   the Land of Promise. Its position and extent are described in
   Josh. 19:40-48.

     The territory of Dan extended from the west of that of Ephraim
   and Benjamin to the sea. It was a small territory, but was very
   fertile. It included in it, among others, the cities of Lydda,
   Ekron, and Joppa, which formed its northern boundary. But this
   district was too limited. "Squeezed into the narrow strip
   between the mountains and the sea, its energies were great
   beyond its numbers." Being pressed by the Amorites and the
   Philistines, whom they were unable to conquer, they longed for a
   wider space. They accordingly sent out five spies from two of
   their towns, who went north to the sources of the Jordan, and
   brought back a favourable report regarding that region. "Arise,"
   they said, "be not slothful to go, and to possess the land," for
   it is "a place where there is no want of any thing that is in
   the earth" (Judg. 18:10). On receiving this report, 600 Danites
   girded on their weapons of war, and taking with them their wives
   and their children, marched to the foot of Hermon, and fought
   against Leshem, and took it from the Sidonians, and dwelt
   therein, and changed the name of the conquered town to Dan
   (Josh. 19:47). This new city of Dan became to them a new home,
   and was wont to be spoken of as the northern limit of Palestine,
   the length of which came to be denoted by the expression "from
   Dan to Beersheba", i.e., about 144 miles.

     "But like Lot under a similar temptation, they seem to have
   succumbed to the evil influences around them, and to have sunk
   down into a condition of semi-heathenism from which they never
   emerged. The mounds of ruins which mark the site of the city
   show that it covered a considerable extent of ground. But there
   remains no record of any noble deed wrought by the degenerate
   tribe. Their name disappears from the roll-book of the natural
   and the spiritual Israel.", Manning's Those Holy Fields.

     This old border city was originally called Laish. Its modern
   name is Tell el-Kady, "Hill of the Judge." It stands about four
   miles below Caesarea Philippi, in the midst of a region of
   surpassing richness and beauty.

     (2.) This name occurs in Ezek 27:19, Authorize Version; but
   the words there, "Dan also," should be simply, as in the Revised
   Version, "Vedan," an Arabian city, from which various kinds of
   merchandise were brought to Tyre. Some suppose it to have been
   the city of Aden in Arabia. (See MAHANEH-DAN.)


Hitchcock's Bible Names Dictionary (late 1800's):

Dan, judgment; he that judges