Synonym: bubble, froth, lather. Meaning: [fəʊm] 
n. 1. a mass of small bubbles formed in or on a liquid 2. a lightweight material in cellular form; made by introducing gas bubbles during manufacture. v. form bubbles.
n. 1. a mass of small bubbles formed in or on a liquid 2. a lightweight material in cellular form; made by introducing gas bubbles during manufacture. v. form bubbles. 
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1, She scraped the foam off her coffee.
2, The breaking waves left the beach covered with foam.
3, The burning foam generates such heat that other items in the room can ignite spontaneously.
4, We see foam on water with a lot of soap in it.
5, The shoulder straps are padded with foam.
6, Foam rubber provides good insulation.
7, All the sharp corners were padded with foam.
8, The glass of beer was mostly foam.
9, The sea was flecked with foam.
10, The goblet was mantling with foam.
11, The fire extinguisher directs foam onto the fire.
12, The breaking waves had edges of foam.
13, She sat there,(http://sentencedict.com/foam.html) reclined against a foam rubber cushion.
14, These walking boots are padded with shock-resistant foam.
15, The foam operates as a very effective filter.
16, Do you prefer a feather pillow or a foam pillow?
17, We had given him a large foam mattress to sleep on.
18, Foam rubber is soft rubber full of small air - bubbles.
19, Foam is injected into the walls where it expands and provides insulation.
20, Firefighters using water and foam are still tackling the blaze.
21, The foam rubber squeaked beneath her weight.
22, They just ate the foam rubber mattress cover.
23, A foam mattress supports the body with foam.
24, Or only like foam on the sea shore.
25, Remember the scandal of polyurethane foam?
26, Her legs felt like foam rubber.
27, They are all padded with foam or sponge.
28, The water curved round the rocks in great bursts of foam.
29, A quick way to seal awkward gaps is to use a foam filler.
30, The oil is used to flavour and perfume soaps, foam baths, and scents.