tuck out verb 3tuck-out noun 1forms 4 verb3 •to dangle free; to be untuckedHis shirt tucked out between his legs. •(Philippines) to untuck clothes (such as a shirt or topcloths)He tucked out his polo (dress shirt) but not his undershirt. •(no longer used) to feastWe were tucking out until nightfall. tuck-out noun1 •(slang) A tuck-in; a hearty meal. formstucked out · tucking out · tucks out · tuck-outs