Related Clues:

• Lacking width and depth, briefly
• Superficial, briefly
• Lacking depth and scope, briefly
• Like a line, in brief
• Lacking width and depth, for short
• Without width or depth
• Like lines, briefly
• Like the x- or y-axis
• Going along the line, briefly?
• Linear, in brief
• Like the x- or y-axis briefly,
• Lacking depth, briefly
• Superficial, for short
• Like the x-, y- or z-axis
• Linear, informally