Refers to both hands or both arms together. Common in everyday use.
He lifted the big box with both hands.
She spread both arms to welcome her friend.
Slang or secret jargon meaning 'ten', derived from the number of fingers on both hands. Rare and context-dependent.
Among the group, they sometimes called ten 'both hands'.
I held the heavy box with both hands.
The police told him to raise both hands.
The child ran over with both arms spread wide.
She put her hands together and prayed in front of the grave.
My hands are full with luggage, so I can't open the door.