Pinta's companion (4)
I believe the answer is:
nina
'pinta's companion' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for nina that I've seen before include "Al Hirschfeld's 'hidden' daughter" , "One of Columbus's ships in 1492; girl's name" , "- - Simone, 1933-2003, singer" , "Girl" , "- Simone, US singer" .)