Meaning of Lower classes
Unknown / অজানা / अज्ञात
to cause to descend; let or put down: to lower a flag.
to make lower in height or level: to lower the water in a canal.
to reduce in amount, price, degree, force, etc.
to make less loud: Please lower your voice.
to bring down in rank or estimation; degrade; humble; abase (oneself), as by some sacrifice of self-respect or dignity: His bad actions lowered him in my eyes.