crevice, gap

OPENING
WordClue
GAPchasm, gorge
RIPgap, hole
HOLEgap
POREtiny opening in the skin
RIFTgap, chasm
SLITnarrow cut or opening
TEARgap, break
ABYSSchasm, gap
BREAKgap
CHASMgap, gorge
SPLITgap, break
DIVIDEgap
HIATUSgap in a series
WINDOWtransparent or translucent opening
CREVICEopening, gap
FISSUREgap, hole
PEEPHOLEglass opening in door
OPENINGcrevice
SPASMcrick, seizure