1 [T] to throw sth lightly and carelessly 扔；抛: Bob opened the letter and tossed the envelope into the bin. 鲍勃打开信，将信封扔到垃圾桶里。

2 [I,T] to move, or make sb/sth move up and down or from side to side （使）颠簸，辗转，翻来覆去: He lay tossing and turning in bed, unable to sleep. 他在床上翻来覆去，无法入睡。The ship was tossed about by huge waves. 船在大浪里颠簸。

3 [T] to move your head back quickly especially to show you are annoyed or impatient 将头一扬（尤指表示生气或不耐烦）: I tried to apologize but she just tossed her headand walked away. 我想要道歉，但她把头一扬就走开了。

4 [I,T] toss (up) (for sth) to throw a coin into the air in order to decide sth, by guessing which side of the coin will land facing upwards 掷硬币决定 [T] to toss a coin 掷硬币 ☞Look at heads and tails. These are the names of the two sides of a coin and we say ‘heads or tails?’ when we are guessing which side will face upwards. 参看heads及tails。heads和tails指硬币的正面和反面，掷硬币时猜正面朝上就说heads，猜反面朝上就说tails。 toss noun [C]