[{"Bold_text": "noun", "List Items": ["a wedge or block of wood, metal, or the like, for filling in a space, holding an object steady, etc.", "Nautical.any of various heavy metal fittings on a deck or wharf that serve as fairleads for cables or chains.a shaped support or cradle for a ship's boat, barrel, etc.a small wooden piece or timber for filling a gap, reinforcing an , etc., in a wooden vessel.", "any of various heavy metal fittings on a deck or wharf that serve as fairleads for cables or chains.", "a shaped support or cradle for a ship's boat, barrel, etc.", "a small wooden piece or timber for filling a gap, reinforcing an , etc., in a wooden vessel.", "Metalworking.a bearing supporting the end of a rolling mill.", "Mining.a roof support made of cribbing filled with stones.Compare cog3(def2) cog3(def2)."]}, {"Bold_text": "verb (used with object)", "List Items": ["to furnish with or secure by a chock or chocks.", "Nautical.to place (a boat) upon chocks."]}, {"Bold_text": "adverb", "List Items": ["as close or tight as possible:chock against the edge."]}]