Do you see what this is? Maybe a plural?
Yes, it is a plural. Letter ל is the preposition that means to, for.
For עתים this is the plural of noun עֵת, time. Look at ptr S-d0979.2 and at ptr N-d05.A.1.
So we have: to times. In practice it usually is used to mean sometimes, at times.
Look at word 562.