Entry record from Sneddon (1984a): Proto-Sangiric
Page number: 103
*səbu
• froth; foam; to extinguish fire.
Note: Sangir səbu, Talaud (A) <sabu>, Bantik subú, Ratahan suβú foam, froth; to extinguish fire with water (PPh *səbu· develop steam; seethe; extinguish/quench].