Should (?), imp. of Shall. [OE. sholde, shulde, scholde, schulde, AS. scolde, sceolde. See Shall.] Used as an auxiliary verb, to express a conditional or contingent act or state, or as a supposition of an actual fact; also, to express moral obligation (see Shall); e. g.: they should have come last week; if I should go; I should think you could go. "You have done that you should be sorry for." Shak.

Syn. -- See Ought.

Should (?), imp. of Shall. [OE. sholde, shulde, scholde, schulde, AS. scolde, sceolde. See Shall.] Used as an auxiliary verb, to express a conditional or contingent act or state, or as a supposition of an actual fact; also, to express moral obligation (see Shall); e. g.: they should have come last week; if I should go; I should think you could go. "You have done that you should be sorry for." Shak.

Syn. -- See Ought.

• Indicating that a verb was or is intended to take place.
  
• Indicating that a verb has a good possibility of happening.
  
• If; in case of.
       Should you need extra blankets, you'll find them in the closet.