any object placed under another to provide support; prop, pole

Wiktionary

 someone who is usually in, participates and is willing to join and accompany friends

base, basis, bedding, column, cornerstone, degree, foot, foundation, gradation, grade, ground, groundwork, leg, pile, pillar, position, rank, rock, stalk, stanchion, standard, stature, status, support, trestle, upright

noun پایه / pâye

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