(chemistry) A salt of sodium hydroxide and carbonic acid, NaHCO₃. / This salt used in cooking as a raising agent, as an antacid, a cleaner, etc.

A form of exercise in which one lies on one's back and makes cycling motions with the legs. / (soccer) A kick in which the kicker leans backwards and kicks the ball back over his head.

to perform a bicycle kick.

Having both sides convex.

To quarrel in a tiresome, insulting manner. / To brawl or move tremulously, quiver, shimmer (of a water stream, light, flame, etc.) / (of rain) To patter. / To skirmish; to exchange blows; to fight.

A skirmish; an encounter. / (Scotland, obsolete) A fight with stones between two parties of boys. / A wrangle; also, a noise, as in angry contention.

(Scotland) A wooden drinking-cup or other dish.

(anatomy) The flexor in the upper arm.

Having two points or prominences; ending in two points; said of teeth, leaves, fruit, etc.

A tooth with two cusps; a premolar tooth.