1. to the inside of; toward the interior of
2. in the direction of; toward
3. to a point of contact with; against

Examples

• She walked into the room.
• He drove into the city.
• The car crashed into a tree.
• Water turns into ice when frozen.
• She’s really into photography these days.
• They went into the details of the plan.
• The investigation is well into its second week.