rāqu
1) empty , vacant , void ; 2) available , free , unoccupied ; 3) at leisure , idle , unemployed , jobless (?) ; 4) futile , meaningless , vapid , valueless , worthless ; 5) neologism : a bird : a cuckoo ;
See also : durāru, šubarrû *, paṭāru, zakû (D), riāqu