Beacon
Easton's Dictionary
A pole (Heb. to’ren) used as a standard or ensign set on the tops of mountains as a call to the people to assemble themselves for some great national purpose (Isa. 30:17). In Isa. 33:23 and Ezek. 27:5, the same word is rendered “mast.” (See Banner.)
Smith's Dictionary
A signal or conspicuous mark erected on an eminence for direction. (Isaiah 30:17)