abysm abyss aperture arroyo assailability bar bezel bind block block up blockade box canyon breach break broach bump bung canyon cash caulk cavity chamfer change ringing chap chase chasm check chime chiming chimney choke choke off choke up clang clanging clangor clank clanking cleave cleft cleuch click clink clog clog up clop clough clump clunk coin col congest constipate cork corrugation coulee couloir cover crack cranny crevasse crevice crump currency cut cut open cwm dado dam dam up defile dell dike ding ding-a-ling dingdong dinging dingle dispart ditch divaricate divide dong donga donging dough draw dull thud engraving excavation fault fill fill up filthy lucre fissure flaw flick flume flump flute fluting fly open foul fracture furrow gap gape gash gong gorge gouge groove gulch gulf gully heel of Achilles hole incise incision interruption jam jangle jingle jingle-jangle jinglejangle jingling joint kloof knell knelling lay open leak legal tender lettuce loot microgroove moat notch nullah obstipate obstruct ope open open up opening pack pad part pass passage pat patter peal peal ringing pealing penetrability pitapat pitter-patter plug plug up plump plunk pop pregnability rabbet rap ravine rent rifling rift rime ring ring changes ringing rip rive ruck rupture rut scissure score scratch seam separate slit slot soft spot sound sound a knell spile split spread spread out spring open stanch stay stench stop stop up stopper stopple streak stria striation stuff stuff up sulcation sulcus swing open tap tear tear open throw open thud thump tick ting ting-a-ling tingle tingling tink tinkle tinkling tinnitus tintinnabulate toll tolling trench tunk valley vincibility void vulnerability vulnerable point wadi wampum weak link weak point weakness well-worn groove wrinkle