1. Having a flat or flattened upper surface
   - flat-top

See also: topped

• biotic community
• biotin
• biotite
• biotitic
• biotope
• biotype
• biotypic
• biovular
• bioweapon
• biparous
• bipartisan
• bipartite
• bipartizan
• biped
• bipedal
• bipedalism
• biphenyl
• bipinnate
• bipinnate leaf
• bipinnatifid
• biplane
• biplane flying fish
• bipolar
• bipolar disorder
• bipolarity