stara

In a sentence

• Stara książka leży na stole.

  The old book is lying on the table.

  The word 'stara' here functions as an adjective describing the feminine noun 'książka' (book), meaning 'old'.

• To stara tradycja w naszej rodzinie.

  This is an old tradition in our family.

  'Stara' is used as an adjective describing the feminine noun 'tradycja' (tradition), again meaning 'old'.

• Stara powiedziała, że mamy zrobić zakupy.

  The old lady said we need to do the shopping.

  In colloquial Polish, 'stara' can be used as a noun to refer to an old woman, often affectionately toward one's mother or another familiar older woman, contextually substituting 'my mother' here.