Lexical Definition

‎אֲגַם‎ ʼăgam (ag-am') pool H:N-M
from an unused root (meaning to collect as water)

pond, pool, standing (water).

1) pool, troubled pool
1a) troubled or muddy (gloomy) pools, marshes
1b) any pool, pond
1c) swamp reeds, reeds, rush(es)

See Greek: λίμνη

Usage: 9 forms in 9 verses
Form Translated As     In Verse(s)
לַאֲגַם a pool of Isa.41.18
לַאֲגַ֔ם a pool Isa.35.7
לַֽאֲגַם into a pool of Ps.107.35
וַאֲגַמִּ֖ים and pools Isa.42.15
וְאַגְמֵי and reed-pools of Isa.14.23
הָאֲגַמִּ֖ים the reed-marshes Jer.51.32
הָאֲגַמִּ֑ים the ponds Exod.8.5
אַגְמֵיהֶ֗ם ponds their Exod.7.19
אֲגַם a pool of Ps.114.8

Brown-Driver-Briggs

‎אֲגַם‎ noun [masculine] troubled pool (Aramaic id., , Assyrian agammu DlW) — ‎׳‎‎א‎ absolute Isa 35:7 construct Isa 41:18 + 2 t.; ‎אֲגַמִּים‎ Exod 8:1* + 2 t.; ‎אַגְמֵי‎ Isa 14:23 ‎אַגְמֵיהֶם‎ Exod 7:19

1. troubled or muddy (gloomy) pools or marshes, plural ‎מַיִם‎ ‎׳‎‎א‎ Isa 14:23.

2. any pool, pond, singular ‎מַיִם‎ ‎׳‎‎א‎ Isa 41:18; Ps 107:35; Ps 114:8 plural without ‎מַיִם‎ Exod 7:19; Exod 8:1* (P) Isa 42:15.

3. swamp-reed, rush (= ‎אַגְמוֺן‎) Jer 51:32.

Brown-Driver-Briggs References

Book Refs
Exodus 7:19 · 8:1*
Psalms 107:35 · 114:8
Isaiah 14:23 · 35:7 · 41:18 · 42:15
Jeremiah 51:32