Boyd’s Bible Dictionary:
(tower). Place in Egypt (Ex. 14:2; Num. 33:7-8). Perhaps same in (Jer. 44:1; 46:14).
Concise Bible Dictionary:
Place near to which the Israelites crossed the Red Sea (Ex. 14:2; Num. 33:7). Apparently distinct from another Migdol in the north of Egypt (Jer. 44:1; Jer. 46:14). In Ezekiel 29:10, margin, “from Migdol to Syene” implies from north to south of Egypt.
Jackson’s Dictionary of Scripture Proper Names:
a tower