ant's
n. countable A1 Beginner US //ˈænts// UK //ˈænts// ants
I accidentally stepped on an ant's nest in the garden.
The scientist used a magnifying glass to observe the ant's movements as it carried a heavy leaf back to the colony.
From our height on the balcony, the people in the square below looked no larger than an ant's shadow moving across the pavement.
Usage
The singular possessive form; the apostrophe must precede the 's'.
Pitfall
the ants's legsthe ant's legsFor a single ant, the apostrophe comes before the 's'; 'ants's' is a common misspelling of the singular possessive.