The Collaborative International Dictionary of English v.0.48:

Gosling \Gos"ling\, n. [AS. g[=o]s goose + -ling.]
   [1913 Webster]
   1. A young or unfledged goose.
      [1913 Webster]

   2. A catkin on nut trees and pines. --Bailey.
      [1913 Webster]

WordNet (r) 3.0 (2006):

gosling
    n 1: young goose

Moby Thesaurus II by Grady Ward, 1.0:

80 Moby Thesaurus words for "gosling":
   Bantam, banty, barn-door fowl, barnyard fowl, biddy, birdling,
   broiler, brooder, broody hen, calf, capon, catling, chanticleer,
   chick, chickabiddy, chicken, chickling, chicky, cock, cockerel,
   colt, cub, dead duck, dogie, domestic fowl, drake, duck, duckling,
   dunghill fowl, fawn, fledgling, foal, fowl, fryer, game fowl,
   gander, gobbler, gone goose, goner, goose, guinea cock,
   guinea fowl, guinea hen, hen, hen turkey, hopeless case, kid, kit,
   kitten, lamb, lambkin, litter, nest, nestling, partlet, piglet,
   pigling, polliwog, poulard, poult, poultry, pullet, pup, puppy,
   roaster, rooster, setting hen, shoat, spring chicken,
   stewing chicken, tadpole, terminal case, tom, tom turkey, turkey,
   turkey gobbler, turkey-cock, weaner, whelp, yeanling