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acequia madre

n. (context South America English) A canal that supplies water for irrigation.

Usage examples of "acequia madre".

It's fed by a ditch they call Roybal's ditch that comes off the Acequia Madre del Sur that used to have a headgate on Indian Creek.

He had been spotted by some little girls en route to Acequia Madre grade school, who chased the beast into a garage and shut the door behind him.