delinquent noun [C]. âº a âperson, usually âyoung, who âbehaves in a way that is âillegal or not âacceptable to most âpeople: âjuvenile delinquents.
Sahelanthropus may have walked on two legs. The oldest evidence for walking on two legs comes from one of the earliest humans known, Sahelanthropus. Walking upright may have helped this species survive in the diverse habitats near where it livedâincluding forests and grasslands.
What they say: A walker or stationary activity center will help your child learn to walk. Truth: Just the opposite -- they may cause delays. Walkers can strengthen the lower leg muscles but don't help the ones in the upper legs and hips.