Boyd’s Bible Dictionary:
(around). Rings were indispensable articles of Jewish ornament. Worn on fingers, wrists, ankles, in ears and nostrils (Isa. 3:20-21; Luke 15:22; James 2:2). Symbols of authority (Gen. 41:42; Esther 3:10). Used as seals (Esther 3:12; Dan. 6:17).
Concise Bible Dictionary:
The well-known ornament worn by women and men in the East (Gen. 24:22, 30, 47; Job 42:11; Hos. 2:13; etc.). In Isaiah 3:20 the allusion is not to a ring for the ear, but to an amulet on which a charm could be written.
Strong’s Dictionary of Hebrew Words:
Transliteration:
tabba`ath
Meaning:
from 2883; properly, a seal (as sunk into the wax), i.e. signet (for sealing); hence (generally) a ring of any kind