Also see definition of "Er" in Word Study
Er
In Bible versions:
Er: NET AVS NIV NRSV NASB TEV
watchman
a son of Joshua; the father of Elmadam; an ancestor of Jesus.
son of Judah by the daughter of Shua the Canaanite
son of Shelah the son of Judah
a son of Joshua; the father of Elmadam; an ancestor of Jesus.
son of Judah by the daughter of Shua the Canaanite
son of Shelah the son of Judah
Greek
Strongs #2262: Hr Er
Er = "watchful"1) the son of Jose and the father of Elmodam
2262 Er ayr
of Hebrew origin (6147); Er, an Israelite: KJV -- Er.see HEBREW for 06147
Hebrew
Strongs #06147: re `Er
Er = "awake"1) the eldest son of Judah
2) son of Shelah and grandson of Judah
6147 `Er ayr
from 5782; watchful; Er, the name of two Israelites: KJV -- Er.see HEBREW for 05782
Er [nave]
ER1. Son of Judah, Gen. 38:3, 6, 7; 46:12; Num. 26:19; 1 Chr. 2:3.
2. A son of Shelah, 1 Chr. 4:21.
3. An ancestor of Jesus, Luke 3:28.
ER [smith]
(watchful).- First-born of Judah. Er "was wicked in the sight of the Lord; and the Lord slew him." (Genesis 38:3-7; Numbers 26:19)
- Descendant of Shelah the son of Judah. (1 Chronicles 4:21)
- Son of Jose and father of Elmodam. (Luke 3:28)
ER [isbe]
ER - ar (`er, "watcher"; Er'):(1) The eldest son of Judah, the son of Jacob, by Shua the Canaanite. Judah took for him a wife named Tamar. It is recorded that Er "was wicked in the sight of Yahweh; and Yahweh slew him" (Gen 38:3,6,7; 46:12).
(2) "Er the father of Lecah" is mentioned among "the sons of Shelah the son of Judah" (1 Ch 4:21).
(3) An ancestor of Jesus in Luke's genealogy in the 7th generation before Zerubbabel (Lk 3:28).
Also see definition of "Er" in Word Study