1
general::
see CUT IN. cut it 1.Also, cut that. Stop, as in I won't stand for that? cut it! or If you don't cut that, I'll tell. [Slang; first half of 1800s] Also see CUT IT OUT. 2. Manage, tolerate, as in I don't know how he can cut it. [Slang; c. 1900] 3. Be effective, prove satisfactory, as in She's getting old and can no longer cut it. [Late 1900s] For a synonym see CUT THE MUSTARD. Also see the subsequent entries beginning with CUT IT.
American Heritage Idioms
2
general::
Phrase(s): cut something into something 1. [and] cut something in
to mix something, usually a soft baking ingredient, into something else. (See also fold something into something.) • Carefully cut the butter into the flour mixture. • Now, cut in some more butter. 2. to slice or chop something into very small pieces, bits, etc. • We cut the meat into one-inch cubes for the stew.
McGrawhill's American Idioms And Phrasal Verbs