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sub

sub

 
pronunciation:
suhb
parts of speech:
noun, verb
features:
Word Combinations (noun, verb), Word Explorer
part of speech: noun
definition 1: (informal) short form of "submarine," a sea vessel that can travel under water.
definition 2: a substitute teacher.
We had a sub in math today.
similar words:
substitute
definition 3: a sandwich made on a long roll; submarine sandwich.
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part of speech: verb
inflections: subs, subbing, subbed
definition: (informal) to take the place of another; substitute for another.
Ms. Smith was sick, so Mr. Jones subbed for her.
similar words:
double, fill in, substitute
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  education