Lacking width and depth, for short

• Without depth
• Linear: abbr
• Superficial, for short
• Without width or depth
• Linear, informally
• Like a line segment, briefly
• Group with the 2012 chart-topping album "Up All Night," to fans
• Like a line, for short
• Like a line, to a math prof

Wiktionary Word definitions in Wiktionary
vb. (en-past of: one )