Boyd’s Bible Dictionary:
(well). Cistern or well (Gen. 37:20); grave (Psa. 28:1); game-trap (Ezek. 19:8); device (Psa. 119:85; Prov. 26:27).
Concise Bible Dictionary:
There are several Hebrew words translated “pit.” The principal are:
1. sheol, “the grave, hades, hell” (Num. 16:30,33; Job 17:16).
2. shachath, “a pit, a pitfall to entrap animals,” place of doom and corruption (Job 33:18,24,28,30; Psa. 9:15; Psa. 30:9; Psa. 35:7; Ezek. 28:8; etc.).
3. bor, beer, “pit or well dug for water,” but which could be used for a dungeon (Gen. 37:20-29; Psa. 28:1; Psa. 40:2; Psa. 88:4,6; Ezek. 26:20; Zech. 9:11, etc.). See BOTTOMLESS PIT.
Strong’s Dictionary of Greek Words:
Meaning:
of uncertain derivation; a hole in the ground (dug for obtaining or holding water or other purposes), i.e. a cistern or well; figuratively, an abyss (as a prison)