(colloquial) honorific used before the name of an elder brother or young male senior: Brother; Mister

elder brother; big brother / respectful term of address or honorific for a young man or boy or any male older than oneself; mister; bro / male upperclassman; male senior

swarming motion (of ants, worms, etc.) / thick moving crowd or throng; swarm

act of swinging one's legs or feet (especially when seated)