(˚eti) & -mantheti

1. to cleave, cut; to crush, destroy MN.i.243 (sikharena muddhānaṃ ˚mantheti); SN.i.127; Dhp.161 (variant reading ˚nth˚); Ja.iv.457 (matthako sikharena ˚matthiyamāno) Dhp-a.iii.152 (= kantati viddhaṃseti).
2. to rub, to produce by friction (esp. fire, aggiṃ; cp. Vedic agniṃ nirmanthati) MN.i.240.

abhi + math or manth, cp. nimmatheti