Definition of sub
English to English noun - a large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States
source: WordNet 3.0 - a submersible warship usually armed with torpedoes
source: WordNet 3.0 - A subordinate; a subaltern.
source: Webster 1913 verb - be a substitute
The young teacher had to substitute for the sick colleague.
The skim milk substitutes for cream--we are on a strict diet.
source: WordNet 3.0
Visual Synonyms 
Nearby Word
sub, subo, sb, scuba, squib, subah, squab, sukbó, soubah, seb, sob, subway, sbw, syb, sup, suv, suwabe, sib, sukáb, sba
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