The initial idioms of the letter N

nurse a drink	nurse a grudge
nurse a serpent in (one's) bosom	nurse a snake in (one's) bosom
nurse along	nurse back to health
nurse (one's) drink	nurse through
nurse a viper in (one's) bosom	nursing
nurts	nurture
nurture a snake in (one's) bosom	nurture a viper in (one's) bosom
nurture a serpent in (one's) bosom	Nuremberg defense
nut	nut (something) out
nut case	nut factory
nut (someone)	nut up
nutcake	nutcase
nut-cutting time	nut-foundry
nuthatch	nuthouse
nutpick	square