The dry and light grass [i.e., chaff].[1]
"They filled the skins they had for tent-covers with hay. Then they gathered the skins and sewed them together, so that the water would not touch the hay."[2]
[This form] is used in the feminine.
Arrian [writes]: "and the skin [tents] being filled with chaff and the entire bank appearing to be full of [troops] did not let Poros rest."[3]
And a neuter [form] is also used, τὸ κάρφος , [dative] τῳ̂ κάρφει .[4]