J

Jacob's-Ladder
14; Jacob's Ladder is a portable ladder made of rope or metal and used primarily as an aid in boarding a ship. Originally, the Jacob's Ladder was a network of line leading to the skysail on wooden ships. The name alludes to the biblical Jacob, reputed to have dreamed that he climbed a ladder to the sky. Anyone who has ever tried climbing a Jacob's Ladder while carrying a seabag can apreciate the allusion. It does seem that the climb is long enough to take one into the next world. (Courtesy of The Goat Locker)

"Jake with me"
105; musician lingo for "okay with me"

James, Henry
5; Henry James, OM (April 15, 1843 – February 28, 1916), son of Henry James Sr. and brother of the philosopher and psychologist William James and diarist Alice James, was an American-born author and literary critic of the late 19th and early 20th centuries. Wikipedia entry

Japanese Oyster
113;

Jeshimon
198; "the place where they brought the ones they didn't want found too soon" 210; Governor, 210, 212 ("something pre-human in the face");

Jim, Dr.
146;

Johansen, Frederik Hjalmar (1867-1923)
138; Norwegian explorer who shipped as fireman on the Fram, with Nansen.

Johannesburg
169; largest city in South Africa, it is still sometimes known by its Zulu name eGoli which means "City of Gold"; Wikipedia entry

Juggernaut, The
31; Scarsdale Vibe's private train;