to eat up (completely)
to put down (a rebellion); to suppress; to subjugate
彼は山盛りのラーメンをあっという間に平らげた。
He ate up the heaped bowl of ramen in no time.
彼女は大盛りのご飯を平らげている途中だ。
She is in the middle of finishing off the large serving of rice.
食べ盛りの息子は何でも平らげる。
My son, who is always hungry, eats everything up.