IPA: /ˈɑːrmfəl/
KK: /ˈɑrmfəl/
The quantity of something that can be held in one or both arms.
She carried an armful of flowers into the room.
Armful → It is formed from "arm" (from Old English "earm", meaning the upper limb) and "-ful" (meaning full of). The word "armful" means full of arms or the amount that can be held in one's arms.
Think of the word 'arm' as representing the upper limb, and '-ful' meaning full of — so an 'armful' is the amount you can carry in your arms.