Related Clues:
- Lacking depth, informally
- With no depth, for short
- On a plane, for short
- Group with the 2012 chart-topping album 'Up All Night,' to fans
- Like a straight line, in brief
- Planar, for short
- Like the number line, in brief
- Lacking depth and width
- Having only length, for short
- Harry Styles' band, to fans
- Breakout band for Harry Styles and Zayn Malik, familiarly
- Having length and width but not depth, for short