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pincers
There are no words that have a opposite meaning for 'pincers'.
'Pincer' is singular and 'pincers' usually is used for a set of two pincers; a pair.
Some animals that have pincers are lobsters, crabs, and earwig. There are also insects called pincer bugs that have pincers.
A crab has pincers for defending itself and its like its hands for picking up things.