hambone n.

"thigh of a hog used for food" (especially salted and cured or smoke-dried), 1630s, extended from earlier sense of "part of the human leg behind the knee; hock of a quadruped," from Old English hamm "hollow or bend of the knee," from Proto-Germanic *hamma- (source also of Old Norse höm, Middle Low German, Middle Dutch hamme, Old High German hamma). This is from PIE *knam- "shin bone" (source also of Greek knēmē "calf of the leg, shank, tibia; spoke of a wheel," Old Irish cnaim "bone").

Ham-fisted (adj.) in reference to hard-hitting characters is from 1905; ham-handed "coarse, clumsy" is by 1896. With hammen ifalden "with folded hams" was a Middle English way of saying "kneeling."

Middle English bon, from Old English ban "bone, tusk, hard animal tissue forming the substance of the skeleton; one of the parts which make up the skeleton," from Proto-Germanic *bainan (source also of Old Frisian and Old Saxon ben, Old Norse bein, Danish ben, German Bein). Absent in Gothic, with no cognates outside Germanic (the common PIE root is *ost-); the Norse, Dutch, and German cognates also mean "shank of the leg," and this is the main meaning in Modern German, but English seems never to have had this sense.

To work (one's) fingers to the bone is from 1809. To have a bone to pick (1560s) is an image of a dog struggling to crack or gnaw a bone (to pick a bone "strip a bone by picking or gnawing" is attested from late 15c.); to be a bone of contention (1560s) is of two dogs fighting over a bone; the images seem to have become somewhat merged. Also compare bones.

Bone-china, which is mixed with bone-dust, is so called by 1854. Bone-shaker (1874) was an old name for the early type of bicycle, before rubber tires.

"overacting inferior performer," 1882, American English, apparently a shortening of hamfatter (1880) "actor of low grade," which is said (at least since 1889) to be from the old minstrel show song, "The Ham-fat Man" (attested by 1856). The song, a comical black-face number, has nothing to do with acting, but the connection might be with the quality of acting in minstrel shows, where the song was popular (compare the definition of hambone in the 1942 "American Thesaurus of Slang," "unconvincing blackface dialectician"). Its most popular aspect was the chorus and the performance of the line "Hoochee, kouchee, kouchee, says the ham fat man."

Ham also had a sports slang sense of "incompetent pugilist" (1888), perhaps from the notion in ham-fisted. The notion of "amateurish" led to the sense of "amateur radio operator" (1919).