From BiblePortal Wikipedia

Fausset's Bible Dictionary [1]

("stopping the way".) On Naphtali's boundary, between Jabneel and Jordan ( Joshua 19:33). E. Wilton makes Lakum to be E. of Jordan; for  Deuteronomy 33:23, "possess thou "the sea" ( Yam ) and the sunny district" (Speaker's Commentary Darom, E. Wilton "the circuit"), may imply, Naphtali possessed the entire basin, shut in by mountains, which contained the upper Jordan and lakes Merom and Tiberius. Josephus says Naphtali included the eastern parts. Tubariyeh (Tiberius) includes the E. as well as W. of the lake. E. Wilton identifies Lakum with Arkub E. of the lake. The meaning of Lakum accords, rugged rocks stopping the way along the S.E. shore. However, Lt. Conder identifies Lakum with Kefr Kama (Palestine Exploration Quarterly Statement, January, 1878, p. 19).

Smith's Bible Dictionary [2]

La'kum. (Fortification). Properly, formed the landmarks of the boundary of Naphtali.  Joshua 19:33.

Morrish Bible Dictionary [3]

Border city of Naphtali.  Joshua 19:33 . Not identified.

Holman Bible Dictionary [4]

 Joshua 19:33

Cyclopedia of Biblical, Theological and Ecclesiastical Literature [5]

(Heb. Lakkum', לִקּוּם , according to Gesenius, Way-Stopper, i.e. fortified place; Sept. Λσκούμ v. r. Δωδάμ and ῎Ακρον , Vulg. Lecum), a place on the northeastern border of Naphtali, mentioned after Jabneel in the direction of the Jordan ( Joshua 19:33), and therefore probably situated not far south of Lake Merom. he Talmud (Megilloth, lxx, 1) speaks of a Lakium ( לוקים ), perhaps the same place (see Reland, Palest. p. 875). The site of Lakkum is possibly indicated by the ruins marked on Van de Velde's Map adjoining a small pool east of Tell-Akbarcth and south-east of Safed.