j'ai

I've, I have; compound of je and ai

un

• Article

  an, a

• Num
• Pron
• Noun

morceau

1. piece, slice, bit, morsel
2. piece, work
3. (slang) gun, piece

de

• Prep

  1. of (expresses belonging)
  2. of (used to express property or association)
  3. from (used to indicate origin)
  4. of (indicates an amount)
  5. used attributively, often translated into English as a compound word
  6. from (used to indicate the start of a time or range)
  7. used after certain verbs before an infinitive, often translated into English as a gerund or an infinitive
  8. by (indicates the amount of change)

• Article
• Noun

pain

1. bread
2. piece of bread
3. food
4. bread-and-butter needs, basic sustenance; breadwinner
5. (informal) punch (a hit with the fist)
6. a block (of ice, of salt, of soap …) with the shape and size of bread
7. (slang) mistake during a performance (false note, forgot an intro, wrong solo, …)