Dig in Definition 1 of 4Pro Tip 1/3Eagerness Expresses excitement and readiness to start enjoying something. When I said 'dig in', they eagerly grabbed their forks. Pro Tip 2/3Invitation Often used to invite others to start eating at communal meals. The host exclaimed 'dig in!' as the buffet opened. Pro Tip 3/3Informal Gathering Commonly used in casual dining situations among friends or family. At the barbecue, everyone was told to just dig in.