Boyd’s Bible Dictionary:
(daughters of Pleione). The “seven stars.” A group of stars in the constellation Taurus (Job 9:9; 38:31; Amos 5:8).
Concise Bible Dictionary:
The Hebrew signifies literally “a heap or collection.” Being named with Arcturus and Orion, it doubtless refers to the group of stars that still bear the name Pleiades (Job 9:9; Job 38:31). The same Hebrew word is translated SEVEN STARS in Amos 5:8. There are many stars in the group, but seven are visible to the naked eye. Job 38:31 is better translated, “Canst thou fasten the bands of the Pleiades, or loosen the cords of Orion?”
Pleiades
Jackson’s Dictionary of Scripture Proper Names:
for what?