Definition of trout in US English:



  • A chiefly freshwater fish of the salmon family, found in both Eurasia and North America and highly valued as food and game.

    Genera Salmo (several species of true trouts, including the European brown trout and the rainbow trout), and Salvelinus (several North American species), family Salmonidae. See also lake trout, sea trout

    • ‘Lots of fish are suitable, including salmon and trout, but my favourite is sea bass.’
    • ‘Fish is not in such great supply, though you can get salmon and trout at realistic prices.’
    • ‘Only a few trout were recorded for the seven anglers who fished for a short period.’
    • ‘We were very aware on holiday of the proliferation of salmon, trout, halibut and mussel farms.’
    • ‘Most anglers are having lots of sport with the smaller trout as well as with the stocked fish.’
    • ‘My father used to go shooting and fishing and we had lots of rabbit, salmon and trout to eat.’
    • ‘Leaders are extremely important in pike fishing just as they are in trout and salmon fishing.’
    • ‘Pike tend to live on a diet of whatever fish is available in their waters, such as perch, salmon and trout.’
    • ‘In the absence of brook trout, up to one of two nonnative trouts (wild brown or rainbow) would be substituted as an intolerant species.’
    • ‘In civil law no one has the right to fish for trout other than the riparian owner’
    • ‘My favourites are black lumpfish eggs, but red trout and salmon eggs will do just as well.’
    • ‘The browns and the tiger trout were magnificently marked and all fish were fin perfect.’
    • ‘With the end of the trout and salmon season in sight, its time to get going on the pike.’
    • ‘The rods you should take are a five weight for the trout fishing, a six or seven weight rod is ideal for bass.’
    • ‘Oily fish such as salmon, trout, mackerel and sardine would be a better catch for Chris.’
    • ‘Fish is most beneficial for the body when it comes in an oily form such as mackerel, trout or salmon.’
    • ‘The white trout was immediately recognised by the furious fight it put up when it was hooked.’
    • ‘The lock is a popular angling pitch, as it provides a natural basin and is usually rich in salmon and trout.’
    • ‘The species can live in a higher temperature than most other trouts, and this is probably why they were introduced to America.’
    • ‘The lines you used for trout and salmon fishing are useless in the warmer climates.’


  • old trout

    • informal An annoying or bad-tempered old person, especially a woman.

      • ‘But I bet the silly old trout just left it in the bank instead of spending it.’
      • ‘If Mau was hoping that she would reply, ‘No, I'm a hardened old trout who's in it for the money ’, she was doomed to disappointment.’
      • ‘I remember her beaming with pride that six of her class of twenty odd pupils had passed, I don't think I'd seen the sour faced old trout ever smile before, in fact I'm sure of it.’
      • ‘He might be an annoying twat and she a bit of an old trout but they can pick their books.’
      • ‘He's pretty chipper about his inquiry, but I think his man let that old trout Barbara off the hook.’
      • ‘One of the bar staff is a moody old trout but all the guys and manager are great.’
      • ‘In short, he was making the most of his ferreting, like some old trout picking hairgrips in a supermarket.’
      • ‘Every chemist has one; some acid-faced old trout who tuts and shuffles around the medicines like you're holding her to ransom with your request.’
      • ‘The old trout has decided to come over for a few days in Singapore, which she still believes is a British colony.’
      • ‘The sphinx who had tormented the shy, lovesick painter in his youth sits enthroned in a flashy drawing-room, a self-satisfied, puffy-looking old trout, holding her horrid little dog in her arms.’


Late Old English truht, from late Latin tructa, based on Greek trōgein ‘gnaw’.