Current translation for Crockham Hill
  crock derived from croc - A crock, pitcher, waterpot or flagon,
  ham derived from hamm - Denotes a piece of land surrounded with paling, wicker-work, etc., and so defended against water, which would otherwise wash it away, so a valley settlement or settlement with a jetty.
  hill derived from hyll - a hill
Place name translation provided by saxonhistory.co.uk