bog in verb3 •(Australia, slang) To start eating with gusto.He closed the door and motioned them to a tray. `Bog in, it's all on the house.' — 1951 •(Australia, slang) To tackle a task vigorously. •To halt the progress of.North of the Alps, you can have heat and sun--but some summers (if you go far enough north) you can also be bogged in by rain and enough chill that you have to go out and buy wool hats. — 2000 formsbogged in · bogging in · bogs in