1. In a menacing or scowling way
   "he looked up loweringly"

See also: lowering

• Polybotrya cervina
• polybutene
• polybutylene
• polycarbonate
• Polycarp
• William Mitchell
• William Morris
• William Nunn Lipscom Jr.
• William of Occam
• William of Ockham
• William of Orange
• William of Wykeham
• William Patterson
• William Penn
• William Penn Adair Rogers
• William Pitt
• William Ralph Inge
• William Randolph Hearst
• William Rehnquist
• William Richard Morris
• William Rose Benet
• William Rowan Hamilton
• William Rufus
• William S. Burroughs
• William S. Gilbert