BT Šab 54a(14) :דמשתכנא כרעא בגוה עד כבלא‏ : because his foot sinks into it [i.e. the sandy soil] up to the fetter
See the entire entry for kḇel, kaḇlā n.m. chain

BT Šab 54a(14) :דמשתכנא כרעא בגוה עד כבלא‏ : for the leg sinks into it up to the fetter
See the entire entry for škn vb. to inhabit; D to gift

BT Šab 54a(14)var. :דמשתכנא"דמשתקעא" כרעא בגוה עד כבלא‏ : for the leg sinks into it up to the fetter
See the entire entry for šqˁ vb. to sink

BT Šab 54a(14)var. :דמשתכנא"משתרגא בה" כרעא בגוה‏ : the leg settles/slips/ into it
See the entire entry for šrg#3 vb. to move suddenly or quickly