first-line

first-line (not comparable)

1. Of first resort.

   The embankment was the first-line defense against the flood.

2. Of prime quality or importance.
3. At the lowermost supervisory level.

   first-line manager

   Police sergeant is a first-line position.

• second-line

• “first-line”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.
• “first-line”, in Merriam-Webster Online Dictionary, Springfield, Mass.: Merriam-Webster, 1996–present.
• “first-line”, in Dictionary.com Unabridged, Dictionary.com, LLC, 1995–present.
• “first-line”, in Collins English Dictionary.

• fertilins, infilters