sisagwelk [si/sa/*gwelk]
Stem with modifying proclitic composed of: si=1  harvest/do/make/begin, sa=2  do/make/get, gwelk  burn
intransitive verb. spark
'Nda'ay'ooyn t'isalp dawila sisagwelkt. Hit the flints together and they will spark.

Source: Draft Dictionary entry.