What does Genesis 50:12 mean?

In the moments before his death, Jacob gave his twelve sons an order: to return his body to Canaan (Genesis 49:29–32). He wanted to be buried with his ancestors in family tomb (Genesis 23:17–20). Earlier, Jacob even insisted Joseph take a solemn oath not to bury him in Egypt, but to lay him to rest with his fathers. Joseph had sworn to do exactly that (Genesis 47:29–31). Now Jacob's sons have fulfilled their father's wishes, as the following verses will describe in detail. They have carried him from Egypt to the cave in the field at Machpelah (Genesis 50:7–10).

The large procession of Egyptians and Hebrews grieved Jacob for seven days, in the same location. Using wordplay—similarity between the words for "mourning" and "meadow"—locals came to call that place "Mourning / Meadow of Egypt" (Genesis 50:11).