The Collaborative International Dictionary of English v.0.48:

Almug \Al"mug\, Algum \Al"gum\, n. [Heb., perh. borrowed fr.
   Skr. valguka sandalwood.] (Script.)
   A tree or wood of the Bible (2 Chron. ii. 8; 1 K. x. 11).
   [1913 Webster]

   Note: Most writers at the present day follow Celsius, who
         takes it to be the red sandalwood of China and the
         Indian Archipelago. --W. Smith.
         [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Algum \Al"gum\, n.
   Same as Almug (and etymologically preferable). --2 Chron.
   ii. 8.
   [1913 Webster]

Easton's 1897 Bible Dictionary:

Algum
   (2 Chr. 2:8; 9:10,11), the same as almug (1 Kings 10:11).