falling on one's backside (behind, bottom); pratfall; mochi used to celebrate a child's first birthday; mochi tied to a baby's back if he starts walking before his first birthday in order to cause him to fall on his backside
to be attached; to be connected with; to remain imprinted; to scar; to bear (fruit, interest, etc.); to be acquired (of a habit, ability, etc.); to increase (of strength, etc.)