פִּשְׁתִּי

From LSJ

γέλως ἄκαιρος κλαυμάτων παραίτιος → ill-timed laughter causes tears (Menander)

Source

English (Strong)

from the same as פַּשׁ as in the sense of comminuting; linen (i.e. the thread, as carded): flax, linen.