a person who loves reading
человек, который любит читать (chelovek kotory lyubit chitat)
"He’s such a bookworm; he spends all his free time in the library."
"Он такой книжный червь; он проводит всё своё свободное время в библиотеке." (on takoy knizhny cherv on provodit vsyo svoyo svobodnoe vremya v biblioteke)
in an uncertain or unstable situation
to compete strongly against someone
to waste money on something useless
at the peak of activity or progress
someone very precious or loved deeply
to keep your plans or intentions secret