Boyd’s Bible Dictionary:
(links). Used for ornament on man and beast, and for fetters (Gen. 41:42; Judg. 8:21; 16:21; 2 Sam. 3:34; 2 Kings 25:7; Isa. 3:19; Acts 12:6; 21:33; 28:20).
Concise Bible Dictionary:
These are mentioned in scripture:
1. As the insignia of office; Joseph and Daniel were invested with gold chains (Gen. 41:42; Dan. 5:7).
2. As ornaments: they were placed on parts of the temple; were worn on the neck, and found among the spoils of war: (Ex. 28:14; Num. 31:50; 2 Chron. 3:5,16; Song of Sol. 1:10).
3. Used to secure prisoners (Jer. 39:7; Lam. 3:7; Acts 12:6; 2 Tim. 1:16; Jude 6).
Strong’s Dictionary of Hebrew Words:
Meaning:
from an unused root meaning to perforate; properly, pierced, i.e. a bead of pearl, gems or jewels (as strung)