1. Not in a barrel
   - unbarrelled [Brit, Cdn]

Antonym: barreled

• penicillin
• penicillin F
• penicillin G
• penicillin O
• penicillin V
• penicillin V potassium
• penicillin-resistant
• penicillin-resistant bacteria
• penicillinase
• penicillinase-resistant antibiotic
• Penicillium
• penile
• penile implant
• peninsula
• peninsular
• penis
• penis envy
• penitence
• penitent
• penitential
• penitentially
• penitentiary
• penitently
• penknife
• penlight