Synonym: frustrate, metal, outwit, ruin, spoil, sword, thwart. Similar words: foible, oil, soil, boil, toilet, boil down, turmoil, boiling water. Meaning: [fɔɪl] 
n. 1. a piece of thin and flexible sheet metal 2. anything that serves by contrast to call attention to another thing's good qualities 3. a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through 4. picture consisting of a positive photograph or drawing on a transparent base; viewed with a projector 5. a light slender flexible sword tipped by a button. v. 1. enhance by contrast 2. hinder or prevent (the efforts, plans, or desires) of 3. cover or back with foil.
n. 1. a piece of thin and flexible sheet metal 2. anything that serves by contrast to call attention to another thing's good qualities 3. a device consisting of a flat or curved piece (as a metal plate) so that its surface reacts to the water it is passing through 4. picture consisting of a positive photograph or drawing on a transparent base; viewed with a projector 5. a light slender flexible sword tipped by a button. v. 1. enhance by contrast 2. hinder or prevent (the efforts, plans, or desires) of 3. cover or back with foil. 
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1, Milk bottle tops are made of tin foil.
2, Cover the chicken with silver foil and bake.
3, Pour cider around the meat and cover with foil.
4, Cover the chicken loosely with foil.
5, I wrapped the sandwiches in kitchen foil.
6, The birds learn to peck holes in the foil milk bottle tops.
7, Her sparkling jewellery served as the perfect foil for her fine complexion.
8, Cover the fish loosely with foil and bake for 30 minutes.
9, Cover the fish with aluminium foil and cook over a low heat for 4 to 5 minutes.
10, There's a new roll of silver foil in there.
11, Wrap the cake in a double thickness of foil.
12, The couple provided the perfect foil for one another.
13, Screw the foil into a little ball.
14, Wrap the meat in foil before you cook it.
15, He pricks holes in the foil with a pin.
16, Our foil packets seal the flavour in.
17, He put silver foil around the fire to increase heat reflection.
18, The pale walls provide a perfect foil for the brightly coloured furniture.
19, Wrap the chicken in foil and cook it for two hours.
20, He thought of her serenity as a foil for his intemperance.
21, A cold beer is the perfect foil for a curry.
22, His mellow guitar technique is the ideal foil for her soaring voice.
23, The simple stone floor is the perfect foil for the brightly coloured furnishings.
24, Food sealed in foil pouches lasts for a long time.
25, She took the chocolate bar out of the foil wrapper.
26, You can make your own distorting mirror by pasting a sheet of kitchen foil to a piece of thin cardboard.
27, In the play,(http://sentencedict.com/foil.html) a wicked uncle acts as a foil to the noble prince.
28, A hospital is to fit new-born babies with electronic tags to foil kidnappers.
29, The older, cynical character in the play is the perfect foil for the innocent William.
30, Dad handed me a big box wrapped in gold foil and tied with a red ribbon.