English Reference
noun

dolphin

n.
US /ˈdɑɫfən/ UK /dˈɒlfɪn/ dol·phin UK spelling dolphin's, dolphin's

  1. 01 A2 Elementary

    a very smart sea animal that breathes air and often swims near boats.

    any of various aquatic mammals of the families Delphinidae and Platanistidae, characterised by a beak-like snout and high intelligence.

    Simple

    We saw a group of dolphins jumping in the waves behind our boat.

    In context

    Marine biologists observed the pod of dolphins using sophisticated clicking sounds to communicate while hunting schools of fish near the reef.

    cetacean
  2. 02 C1 Advanced Technical

    a large, colourful tropical fish that is also called mahi-mahi.

    a large, brightly coloured oceanic fish, Coryphaena hippurus, also known as the dorado or mahi-mahi.

    Simple

    The restaurant serves grilled dolphin, but it is a fish, not the mammal.

    In context

    Anglers prize the common dolphin fish for its vibrant iridescent colours and its reputation as a powerful fighter when hooked.

    mahi mahidorado
  3. 03 C2 Proficiency Technical Science

    a post or structure in the water used for tying up ships.

    a man-made maritime structure, such as a piling or buoy, used for mooring vessels or protecting bridges from impact.

    Simple

    The captain carefully steered the ship toward the concrete dolphin to tie the ropes.

    In context

    The port authority installed several steel dolphins to provide additional mooring points for the large tankers entering the narrow channel.

    pilingmooring post
  4. 04 C2 Proficiency Archaic History

    an old word for the eldest son of the King of France.

    a historical variant of 'dauphin', referring to the eldest son of the kings of France.

    Simple

    The young dolphin was expected to become the next king.

    In context

    Historical documents from the fourteenth century refer to the king's heir as the dolphin, a title later standardised as dauphin.

    dauphin
This entry
Level A2 · Elementary
Frequency Frequent
Updated