crack; gap between two objects; gap in time between two events

crack; crevice; gap or interval; loophole; discord; rift

interval; gap; clearance

to seize an opportunity; to exploit (a loophole)

feud; bitter quarrel

to wait for the opportunity

crevasse

hostility; animosity

pore (geology)

air vent; air gap

gap; crack; rift

lacuna; gap

enmity

gap; slit; crack; crevice; fracture

aperture

crepuscular rays; sunbeams

a white steed flits past a crack (idiom); How time flies!

lit. to look for holes, and observe gaps (idiom); fig. to search out one's opponent's weak points; to look for the Achilles' heel