when one's life is hanging on a thread, relying on something like medicine to extend one's life; to be on the verge of just being able to survive with the help of something (such as money or medicine)
someone who keeps on following another person; a cling-on (a person who acts like a stalker, the only difference being that they follow someone around openly instead of secretly)
hanger; it describes pants which are not long enough to cover the ankles, ankle pants; it describes locations which are remote, not easily accessible by public transportation
to sell / promote something at a higher value than it is supposed to be; it describes people who become difficult / picky, or want more benefits, because they suddenly become more popular