(botany) The main vein of a simple leaf or leaflet, running from the petiole to its apex, and from which the other veins usually spread.

(rare) female equivalent of comrade

(organic chemistry) An indole alkaloid, present in the fungus Pisolithus tinctorius in family Sclerodermataceae, that controls the elongation rate of root hairs.

simple past tense and past participle of change the game.