Definition of go-to-meeting in English:

go-to-meeting

adjective

dated
  • (of clothes) suitable for wearing to church.

    • ‘All were dressed in their Sunday-go-to-meeting best except for my wife and me.’
    • ‘An hour or so later, we saw him again, dressed in his Sunday-go-to-meeting suit and carrying his saxophone in its battered old case.’
    • ‘He was attired in his dark Sunday-go-to-meeting suit, rather than his usual salt-and-pepper tweed.’
    • ‘There's always one more cold front designed to nail folks in frilly, thin, cotton Sunday-go-to-meeting clothes and it struck right on schedule yesterday sending us back down into the fifties by day and the forties by night.’
    • ‘In 1900 working families had few changes of clothes, just their work clothes and a Sunday-go-to-meeting set of clothes (our home was built as a family's home, not a mansion).’