Quick definitions from WordNet (headful)
▸ noun: a covering over the surface of your head ("A headful of tight curls")
▸ noun: the quantity of information that a head will hold ("He has a headful of baseball statistics")
▸ noun: a covering over the surface of your head ("A headful of tight curls")
▸ noun: the quantity of information that a head will hold ("He has a headful of baseball statistics")