fissura angolul

breach [breaches]▼(gap)
noun
[UK: briːtʃ] [US: ˈbriːtʃ]

cleft [clefts]▼(opening made or as if made by splitting)
noun
[UK: kleft] [US: ˈkleft]

fissure [fissures]▼(crack or opening)
noun
[UK: ˈfɪ.ʃə(r)] [US: ˈfɪ.ʃər]

split [splits]▼(crack, longitudinal fissure)
noun
[UK: splɪt] [US: ˈsplɪt]