My wife's friend is Venezuelan and I asked her several years ago what "cribo" meant and she said "snake".

I think it was Iguana Magazine that did a story seven or so years ago about reptiles in the lesser Antilles in which they discussed how clelia are still referred to as cribos.

In Kingsley's "A Christmas in West Indies" he refers to a snake called a cribo that is more or less black with bright yellow around the belly and the tail that feeds on the fer-de-lance.

I think it's a colloquialism and that no real precise definition or translation exists...........