syr ‧ up /ˈsɪrəp $ ˈsɜː-, ˈsɪ-/ BrE AmE noun [uncountable]
[ Date: 1300-1400 ; Language: Old French ; Origin: sirop , from Medieval Latin , from Arabic sharab 'drink, wine, syrup' , from shariba 'to drink' ]
1 . a thick sticky sweet liquid, eaten on top of or mixed with other foods:
ice cream and maple syrup
2 . sweet liquid made from sugar and water, used in cans of fruit ⇨ cough syrup at ↑ cough mixture