According to [taginfo][1] the key dinner has been used two times so far. Not all tags are documented on the wiki, especially tags with which are rarely used. Feel free to use this tag with values similar to the breakfast and lunch tags. Also feel free to update the wiki. In my opinion there is no reason to have different pages for breakfast, lunch and dinner tags because their semantics are very similar. I think they should get documented on a single wiki page. [1]: https://taginfo.openstreetmap.org/keys/?key=dinner

According to [taginfo][1] the key dinner has been used two times so far. Not all tags are documented on the wiki, especially tags with are rarely used. Feel free to use this tag with values similar to the breakfast and lunch tags. Also feel free to update the wiki. In my opinion there is no reason to have different pages for breakfast, lunch and dinner tags because their semantics are very similar. I think they should get documented on a single wiki page. [1]: https://taginfo.openstreetmap.org/keys/?key=dinner