| Idiom | Meaning | Example | 
| a head start | 
a chance to start ahead of  the other runners etc.
 | 
Give the smallest runner a head start. He can't run very fast.
 | 
| a heavy day | 
a busy day, a hard day
 | 
At the end of a heavy day he likes to sit on the patio and read.
 | 
| a heavy hitter | 
a person who can hurt you, a heavyweight
 | 
Al is a heavy hitter. Don't try to cheat him.
 | 
| a heavyweight | 
a person with a lot of power, a heavy hitter, a shogun, VIP
 | 
If you're promoted to vice-president, you'll be a heavyweight -
a powerful person!
 | 
| a hell of a time | 
a difficult task, an awful time, a dickens of a time
 | 
When he's drunk I have a hell of a time getting his car keys. He doesn't want to give me his keys.
 | 
| a hell of a time | 
a great time, a wonderful event, a blast
 | 
"How was the party?" "I wish you had come - we had a hell of a time!"
 | 
| a helping hand | 
help with a job or task, lend a hand
 | 
May was always ready with a helping hand.
 | 
| a hill of beans | 
a small amount, very little
 | 
The money he lost doesn't amount to a hill of beans.
 | 
| a hit | 
a popular song or movie, an idea everybody likes
 | 
Remember the song Michelle? It was quite a hit.
 | 
| a hit | 
a drug dose, drugs from a needle
 | 
When she's depressed, she'll do anything for a hit.
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