"a stupid head," 1530s; later also "a big, clumsy, stupid person." The origin and signification of jolt here is unknown.
1726, "a curious perversion" [Weekley] of Middle English heels over head (late 14c.) "somersault fashion," hence "recklessly." Head (n.) and heels long have been paired in alliterative phrases in English, and the whole image also was in classical Latin (per caput pedesque ire).
"short, thick stick used as a weapon," Old English cycgel "club with rounded head;" perhaps from PIE *geu- "to curve, bend."
late 14c., "shaped like a club, thick at the end," from club (n.). Specifically of defects of the foot by c. 1500; meaning "formed into a club" is from 1620s.
late 14c., "beast that pushes with the head;" early 15c., "one who puts or places," agent noun from put (v.). Meaning "one who throws (a stone or other heavy weight)" is by 1820. As a type of golf club with a stiff and comparatively short staff, used when the ball lies a short distance from the hole, by 1743; see putt (v.).