Synonyms of 'tab'
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A flap of cloth or skin, for example, is a flat piece of it that can move freely up and down or from side to side because it is held or attached by only one edge.
He drew back the tent flap and strode out.
A label is a piece of paper or plastic that is attached to an object in order to give information about it.
He peered at the label on the bottle.
Thesaurus for tab from the Collins English Thesaurus
A tab is a small piece of cloth or paper that is attached to something, usually with information about that thing written on it.