DAILY UPDATED VOCABULARY WITH PICTURES. SARDINE.

• sar‧dine
• 1 [countable] a small young fish that is often packed in flat metal boxes when it is sold as food
• 2

   be packed like sardines

  to be crowded tightly together in a small space:
• commuters packed like sardines on the evening train

Definition from the Longman Dictionary of Contemporary English
Advanced Learner's Dictionary.