Strong's #4041: mgammah (pronounced meg-am-maw')
from the same as 1571; properly, accumulation, i.e. impulse or direction:--sup up.
Brown-Driver-Briggs Hebrew Lexicon:
ּ
megammâh
1) meaning uncertain; perhaps hordes, accumulation, assembling, eagerness (of Babylonians)
Part of Speech: noun feminine
Relation: from the same as H1571
Usage:
This word is used 1 times:
Habakkuk 1:9: "all for violence: their faces shall sup up as the east wind, and they shall gather the captivity as the sand."