grout
noun/ɡraʊt/
/ɡraʊt/
(also grouting)
[uncountable]- a substance that is used between the tiles on the walls and floors of kitchens, bathrooms, etc.
（用于墙上瓷砖间抹缝的）勾缝剂，薄胶泥 Word Originmid 17th cent.: perhaps from grouts, or related to French dialect grouter ‘grout a wall’.