1. [late 18C+] fond of, fascinated by; usu. in phrs. below: earlier usage is primarily nuts upon and then nuts on adj., 20C+ usage is most commonly nuts about and influenced by sense 2 here, crazy.
2. [mid-19C+] (also nertz) insane, mad, crazy; in weaker sense very keen, enthusiastic (see cite 1919).
[1930s+] to drive crazy, insane.
[20C+] to lose emotional control, to go crazy; to make a fuss.
[1910s+] obsessed with, usu. in the context of love.
1. to wander around aimlessly.
2. to mess about, to fool around.
[late 18C–19C] obsessed with, in love with, gratified or pleased with.