bicarb
nounUK /ˈbaɪ.kɑːb/
US /ˈbaɪ.kɑːrb/
A white powder you mix with water to make bubbles and help dough rise.
Mom added a spoon of bicarb to the cake batter so it would puff up.
OTHER MEANINGS
2. A common short name for sodium bicarbonate used as a gentle cleaner.
He scrubbed the sink with bicarb and a damp cloth.
3. A medicine that helps calm an upset stomach.
She took a little bicarb in water after eating too much.
4. A chemical that can fizz when mixed with an acid.
The science class made a volcano fizz using bicarb and vinegar.