I suspect it's connected with the term "chrisom child" (alternative spellings include chrism, crisom, chrysome etc etc). This was a child who died under the age of one month, who was buried in the baptism robes.
There are a number of thread about it here - do a search on each of those variant spellings and you should find them.
If you want to be sure, could you post a clip for others to take a look at?