  In the present work, we study the link between rotation and lithium abundance
in giant stars of luminosity class III, on the basis of a large sample of
single stars of spectral type F, G and K. We shows that giant stars presenting
the highest lithium contents, typically stars earlier than G0III, are those
with the highest rotation rates, pointing for a dependence of lithium content
on rotation, as observed for other luminosity classes. Giant stars later than
G0III present, as a rule, the lowest rotation rates and lithium contents. A
large spread of about five magnitudes in lithium abundance is observed for the
slow rotators. Finally, single giant stars with masses 1.5 < M/Msun <= 2.5 show
a clearest trend for a correlation between rotational velocity and lithium
abundance.
