can·dle 
/ˈkændl̟/ noun
plural candles /ˈkændl̟/ noun [count] : wax that has been formed into a stick or another shape and has a string in the middle that can be burned
burn the candle at both ends — see 1burn
hold a candle to
: to be on the same level as or as good as (something or someone) — used in negative statements ▪ The new movie doesn't hold a candle to [=it is not as good as] the original version.
not worth the candle
chiefly Brit, old-fashioned : not worth the necessary effort, cost, or trouble
▪ The car is so old that replacing the engine is not worth the candle. [=the effort isn't worth the cost]
▪ The car is so old that replacing the engine is not worth the candle. [=the effort isn't worth the cost]
