1. A location of difficulties or hostilities

Derived forms: trouble spots

• penetrability
• penetrable
• penetralia
• penetrate
• penetrating
• penetrating injury
• penetrating trauma
• penetratingly
• penetration
• penetration bomb
• penetrative
• penetratively
• penetrator
• Peneus
• penguin
• pengö
• penial
• penicillamine
• penicillate
• penicillin
• penicillin F
• penicillin G
• penicillin O
• penicillin V
• penicillin V potassium