/ ˈdɒləp; NAmE ˈdɑːləp/ noun ( informal )
1.
a lump of soft food, often dropped from a spoon :
a dollop of whipped cream
2.
an amount of sth :
A dollop of romance now and then is good for everybody.
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WORD ORIGIN
late 16th cent. (denoting a clump of grass or weeds in a field): perhaps of Scandinavian origin and related to Norwegian dialect dolp lump.