mash (mashes 3rd person present) (mashing present participle) (mashed past tense & past participle )
1 verb If you mash food that is solid but soft, you crush it so that it forms a soft mass.
Mash the bananas with a fork. V n
...mashed potatoes. V-ed
2 n-uncount Mash is mashed potato.
(BRIT)
INFORMAL