jeroboam (en)

(noun) an oversize wine bottle holding about three liters

Jetztzeit (de)

present time (compound of jetzt "now" + Zeit "time"); a term coined by Walter Benjamin

joists (en)

lengths of timber or steel supporting part of the structure of a building, typically arranged in parallel series to support a floor or ceiling

jongleur (en)

an itinerant minstrel

Kadarization (en)

a reference to Janos Kadar, a Hungarian communist leader who assumed power in 1956 with the putative support but not the trust of the Soviet Union (I think)

kallocratic (en)

rule by beauty (from Greek kallos)

karstic (en)

(noun) an irregular limestone region with sinkholes, underground streams, and caverns

keloid (en)

(noun) a thick scar resulting from excessive growth of fibrous tissue

Kemalist (en)

of the founding ideology of the Republic of Turkey, implemented by Mustafa Kemal Atatürk and defined by sweeping political, social, cultural and religious reforms designed to separate the new Turkish state from its Ottoman predecessor and embrace a Westernized way of living

kepi (en)

(from the French képi) a French military cap with a flat top and horizontal brim

Kern unseres Wesen (de)

"nucleus of our being"; from Freudian psychology

kif (en)

a substance, especially cannabis, smoked to produce a drowsy state (from Arabic)

kismet (en)

destiny; fate

Kleinstaaterei (de)

a pejorative word mainly used to denote the territorial fragmentation in Germany and neighboring regions during the Holy Roman Empire

kore (en)

(noun) an ancient Greek statue of a clothed young woman standing with feet together

kyphotic (en)

(noun) exaggerated outward curvature of the thoracic region of the spine resulting in a rounded upper back

labefaction (en)

deterioration or downfall

lallate (en)

to speak like a baby (technically: pronouncing the letter "r" so that it sounds like "l")

lanugo (en)

(noun) a dense cottony or downy growth of hair / (noun) the soft woolly hair that covers the fetus of some mammals

lapsology (en)

the study of linguistic slips

lapsus calami (la)

a slip of the pen

lariat (en)

(noun) a rope used as a lasso or for tethering

latifundian (en)

relating to a large landed estate or ranch in ancient Rome or more recently in Spain or Latin America, typically worked by slaves

lazaretto (en)

(noun) an institution (as a hospital) for those with contagious diseases / (noun) a building or a ship used for detention in quarantine / (noun) a space in a ship between decks used as a storeroom

Lebensraum (de)

the territory that a state or nation believes is needed for its natural development, especially associated with Nazi Germany