a pig that has just been weaned and weighs less than 40 kg
3. Australian and New Zealand
a lamb, pig, or calf in the year in which it is weaned
weaner in American English
(ˈwinər)
noun
1.
a recently weaned animal
2. Stockbreeding
a device placed over the mouth of an animal that is being weaned, to keep it from suckling
Word origin
[1570–80; wean + -er1]This word is first recorded in the period 1570–80. Other words that entered Englishat around the same time include: assimilate, cartridge, deadhead, repeater, skeleton-er is a suffix used in forming nouns designating persons from the object of their occupationor labor (hatter; tiler; tinner; moonshiner), or from their place of origin or abode (Icelander; southerner; villager), or designating either persons or things from some special characteristic or circumstance(six-footer; three-master; teetotaler; fiver; tenner)