Definition of "culch"

noun:
- The rocks, crushed shells, and other sea detritus that create an oyster bed, where oyster spawn can attach themselves.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
- The accumulation of small household items of little value. (New England expression.).
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License
verb:
- To prepare an oyster bed with such (culch) attachments.
  
  from Wiktionary, Creative Commons Attribution/Share-Alike License