nothing but
1. To the exclusion of all else. Tom talks about nothing but sports whenever I see him. My toddler is so fussy. At the moment, he'll eat nothing but cheese and drink nothing but apple juice.
2. A large quantity of or exclusively (the thing that has just been inquired about). Typically used hyperbolically. A: "Do you have any extra pens?" B: "Nothing but! Take your pick."
nothing but
only; just. Jane drinks nothing but milk. Dave buys nothing but expensive clothes.
nothing but
Only, as in She thinks of nothing but money. This term was first recorded about 1380.
ˈnothing but
only: Nothing but the freshest vegetables are used in our restaurant.