You can use the Attack action to make a special melee attack, a grapple. If you're able to make multiple attacks with the Attack action, this attack replaces one of them.
The target of your grapple must be no more than one size larger than you, and it must be within your reach.
Using at least one free hand, you try to seize the target by making a grapple check, a Strength (Athletics) check contested by the target's Strength (Athletics) or Dexterity (Acrobatics) check (the target chooses the ability to use).
If you succeed, you subject the target to the grappled condition (its speed is set to 0).
typeitem
sectionaction
nameGrapple
iconGrab
subtitleSpecial melee attack
descriptionAttempt to grab a creature or wrestle with it