Ainkurunuru ( meaning "five hundred short poems") is a classical Tamil poetic work and traditionally the third of the Eight Anthologies ("Ettuthokai") in the Sangam literature. It is divided into five groups of 100 short stanzas of 3 to 6 lines, each hundred subdivided into 10s, or "pattu". The five groups are based on "tinai" (landscapes): riverine, sea coast, mountain, arid and pastoral. According to Martha Selby, the love poems in "Ainkurunuru" are generally dated from about the late-2nd-to-3rd-century-CE (Sangam period). According to Takanobu Takahashi – a Tamil literature scholar, these poems were likely composed between 300 and 350 CE based on the linguistic evidence, while Kamil Zvelebil – another Tamil literature scholar – suggests the Ainkurunuru poems were composed by 210 CE, with some of the poems dated to 100 BCE.