Entry record from Schapper (2020): Wersing Peitoko
aros[aˈros]
• vt. rub; sand down; make smooth.gosok.
Bong ba aroste.Sand down the wood., Gosok kayu itu dulu.
Etymology: Possible Timorese Austronesian borrowing, e.g., Tokodede |fn{rose} 'rub, scrape'. Initial /a/ may be prothetic to avoid an initial /r/.