1. (

• threshold

) the starting point for a new state or experience; "on the threshold of manhood" ;

2. (

• threshold ,
• limen

) the smallest detectable sensation ;

3. (

• doorway ,
• door ,
• room_access ,
• threshold ,

) the entrance (the space in a wall) through which you enter or leave a room or building; the space that a door can close; "he stuck his head in the doorway" ;

4. (

• doorsill ,
• doorstep ,
• threshold ,

) the sill of a door; a horizontal piece of wood or stone that forms the bottom of a doorway and offers support when passing through a doorway ;

5. (

• brink ,
• threshold ,
• verge

) a region marking a boundary ;