BallardyoudaoicibaDictYouDict
surname, attested from late 12c., probably meaning "bald head;" see Wyclif's "Stye up, ballard," where Coverdale translates "Come vp here thou balde heade" [2 Kg.2:23-24, where God kills 42 children for making fun of Elijah's lack of hair.]
scalp (n.)youdaoicibaDictYouDict
mid-14c., "top of the head (including hair)," presumably from a Scandinavian source (though exact cognates are wanting) related to Old Norse skalli "a bald head," skalpr "sheath, scabbard,"from the source of scale (n.1). French scalpe, German, Danish, Swedish skalp are from English. Meaning "head skin and hair as proof of death or a victory trophy" is from c. 1600.
skull (n.)youdaoicibaDictYouDict
"bony framework of the head," c. 1200, probably from Old Norse skalli "a bald head, skull," a general Scandinavian word (compare Swedish skulle, Norwegian skult), probably related to Old English scealu "husk" (see shell (n.)). But early prominence in southwestern texts suggests rather origin from a Dutch or Low German cognate (such as Dutch schol "turf, piece of ice," but the sense of "head bone framework" is wanting). Derivation from Old French escuelle seems unlikely on grounds of sound and sense. Old English words for skull include heafod-bolla.
pilgarlicyoudaoicibaDictYouDict
"Originally: a bald head; a bald-headed person. In later use also: a pitiable, lowly, or foolish person; a shabby or unkempt person. Frequently used without article, as though a proper name", Early 16th cent.; earliest use found in John Skelton (c1460–1529), poet. In some forms apparently partly from pilled + garlic and partly from peeled + garlic; in some forms apparently partly from pill + garlic and partly from peel + garlic.