Er

Boyd’s Bible Dictionary:

(watchman). (1) First-horn of Judah (Gen. 38:3-7; Num. 26:19). (2) A descendant of Shelah (1 Chron. 4:21). (3) Son of Jose (Luke 3:28).

Concise Bible Dictionary:

1. Eldest son of Judah by a daughter of Shuah, a Canaanite. “He was wicked in the sight of the Lord, and the Lord slew him” (Gen. 38:3,6-7; Gen. 46:12; Num. 26:19; 1 Chron. 2:3).
2. Son of Shelah, of the tribe of Judah (1 Chron. 4:21).
3. Son of Jose, in the genealogy of the Lord Jesus (Luke 3:28).

Strong’s Dictionary of Hebrew Words:

Number:
6147 (find all occurrences in KJV Bible)
Transliteration:
`Er
Phonic:
ayr
Meaning:
from 5782; watchful; Er, the name of two Israelites
KJV Usage:
Er

Potts’ Bible Proper Names:

A troop; watchful:―name of two Israelites, Gen. 38:3. {Turma}