Alternative spelling of gas mask

(colloquial) A worker for a company that supplies gas (in the sense of the gaseous fuel), especially one who visits premises to read the meter, test appliances etc.

Alternative spelling of gasoline

(colloquial) Happening at the very end of an event.

Alternative form of blow a gasket

The Sierpinski triangle.

The last gasp or breath a person takes before death. / (by extension) The point of death, or the last period of one's life. / (figuratively) A last-gasp moment, attempt, etc.

(mathematics) A fractal generated from triples of circles, where each circle is tangent to the other two.

simple past tense and past participle of pour gasoline on the fire

(idiomatic) To worsen a conflict between people; to inflame an already tense situation.