cobble           
 noun [ C usually plural ] uk/ˈkɒb.əl/ us/ˈkɑː.bəl/ (also cobblestone)
 (老式路面用的)鹅卵石
a rounded stone used on the surface of an old-fashioned road
  The cart rumbled over the cobbles. 大车咕隆隆地碾过鹅卵石。 
 cobbled
adjective uk/ˈkɒb.əld/ us/ˈkɑː.bəld/
 铺鹅卵石的
made of cobbles
  cobbled streets 铺着鹅卵石的街道