Crossword puzzle clue "brothers' keepers"

ABBOT, the superior in a monastery

FRAT, (short for) a college fraternity

MONASTERY, the residence of a religious community, esp. of monks, living in seclusion from secular society and bound by religious vows

DUO, two people considered a pair for a specific reason

ARK, to put into an ark (a coffer)

BAR, to obstruct or prevent

CAGE, to cage

CAN, to put in a cylindrical container