Definition of looper in US English:

looper

noun

  • 1British A caterpillar of a geometrid moth, which moves forward by arching and straightening its body; an inchworm.

    • ‘They are economical to raise, however, and mass releases can be very effective against corn earworm, cabbageworms, loopers, hornworms, codling moth and other leaf-eating caterpillars.’
    • ‘The cabbage looper larvae are a light green color with light stripes running down their backs.’
    • ‘The newly seeded alfalfa has plant bugs and potato leafhoppers and established alfalfa has army worms, alfalfa loopers, thistle caterpillars, and variegated cut worms.’
    • ‘Aphids, cabbage loopers, flea beetles, leafhoppers and leaf miners are some of the insects that attack lettuce, but slug are the most notorious for loving lettuce.’
    • ‘For the most part tachinid flies prey on caterpillars, including cutworms, gypsy moths, tent caterpillars (whose sticky web tents do not protect them completely from these flies), and the ever present cabbage looper.’
    • ‘In April, the researchers began field testing another lure formulation that attracts alfalfa loopers, cabbage loopers, and corn earworms.’
    • ‘Large amounts of dark green pellets excreted by the feeding looper may stain cauliflower heads.’
    • ‘Some of these wasps are small enough to attack aphids or whiteflies, while others parasitize larger prey such as cabbage loopers, cutworms, and tomato hornworms.’
    • ‘The company is now field testing its use in reducing looper reproduction as well as evaluating a commercial version of the killing station.’
  • 2Baseball
    A fly ball that becomes a hit by dropping out of the reach of the infielders.

    • ‘A fast-racing outfielder appears to catch a looper hit into center field by the home team's slugger, but the umpire rules that the speedster trapped the ball after it hit the grass.’
    • ‘And that's a looper hit into right field for a base hit!’

Pronunciation

looper

/ˈlo͞opər//ˈlupər/