kathora
kaṭhora — hard; SB 3.19.15
kaṭhora — cruel; SB 5.13.3
kaṭhora — sharp; SB 6.12.2
kaṭhora — very, very hard; SB 8.7.14
kaṭhora-neminā — which was very sharp; SB 9.15.34
kaṭhora — harsh; SB 10.66.32-33