1. A synthetic type of penicillin antibiotic (trade name Pipracil) used for moderate to severe infections
   - piperacillin

Type of: penicillin

• clear and present danger
• clear away
• clear liquid diet
• clear off
• clear out
• clear sailing
• clear the air
• clear the decks
• clear the throat
• clear up
• clear-air turbulence
• clear-cut
• clear-eyed
• clear-headedness
• clear-sighted
• clear-thinking
• clearance
• clearance sale
• clearcole
• clearcutness
• cleared
• clearheaded
• clearing
• clearing bank
• clearing house