Please, have a look at the sentence from the A Study in Scarlet, by Arthur Conan Doyle (Chapter 3 = The Lauriston Garden Mystery).
- “This case will make a stir, sir,” he remarked. “It beats anything I have seen, and I am no chicken.”
Lestrade, lean and ferret-like as ever, was standing by the doorway, and greeted my companion and myself.
“This case will make a stir, sir,” he remarked. “It beats anything I have seen, and I am no chicken.”
“There is no clue?” said Gregson.
“None at all,” chimed in Lestrade.
Sherlock Holmes approached the body, and, kneeling down, examined it intently. “You are sure that there is no wound?” he asked, pointing to numerous gouts and splashes of blood which lay all round.
What is the meaning of 'I am no chicken'? I can not find the correct answer. Could you please explain it to me?