|Origin:||Probably from Middle Dutch gulpen 'to swallow'|
1 also gulp down [transitive]
to swallow large quantities of food or drink quickly [= bolt]:
She gulped down her breakfast and ran for the bus.
to swallow suddenly because you are surprised or nervous:
I gulped when I saw the bill.
3 also gulp in [transitive]
to breathe in large amounts of air quickly:
We rushed outside and gulped in the sweet fresh air.
to breathe in large amounts of air quickly because you do not have enough air in your body
gulp something ↔ backphrasal verb
Sandra tried to gulp back her tears.