余

surname Yu

(archaic) I / me / variant of 餘|余[yu2], surplus

extra / surplus / remaining / remainder after division / (following numerical value) or more / in excess of (some number) / residue (math.) / after / I / me

variant of 集[ji2]

one of the characters used in kwukyel (phonetic "pin"), an ancient Korean writing system

in one's spare time / outside working hours / amateur (historian etc)

margin / leeway

remaining

to spare no pains or effort (idiom); to do one's utmost

to cover all at one glance (idiom) / a panoramic view

(out of) the corner of one's eyes / peripheral vision / residual light / light of the setting sun

energy left over (to do sth else)

aftertaste / lingering impression

remnants (of a defeated clique) / rump

college for people who attend after work

Chinese remainder theorem (math.)

cotangent (of angle), written cot θ or ctg θ

surplus / remainder

cosecant (of angle), written cosec θ or csc θ

lit. spare valor for sale (idiom); fig. after former successes, still ready for more work / not resting on one's laurels

seven heavenly bodies and four imaginary stars (in astrology and feng shui)

reverberates around the rafters (idiom); fig. sonorous and resounding (esp. of singing voice)

hobbyist / amateur

spare-time education / evening classes

amateur