Sidewalk flaw (5)
I believe the answer is:
crack
(Other definitions for crack that I've seen before include "Narrow opening; joke" , "attempt" , "Try" , "Break; gap" , "Thin fissure or slangy joke" .)
I believe the answer is:
crack
(Other definitions for crack that I've seen before include "Narrow opening; joke" , "attempt" , "Try" , "Break; gap" , "Thin fissure or slangy joke" .)