naked smut              a fungal disease of cereal grasses which turns
                        affected heads into bare spore masses.
hardcore                a mass of brickbats, small chunks of rubble, and the
                        like, used as fill beneath foundations, roads, etc. 
sarcastic fringehead    a clinid fish, /Neoclinus blanchardi/, whose
                        heads bears a row of fleshy protrusions
tribble                 (papermaking) a large frame strung with wires
                        on which paper is dried.
segregator              (med.) an instrument for collecting the urine
                        excreted by one of the two kidneys.
mechanical twin         (metall.) a crystalline twin formed under strain.
sewer pill              a ribbed wooden ball which scrapes the walls
                        of the sewer through which it is floated.
pallet knife            a small flat utensil for handling pastry paste.
kitchen police          (mil.) soldiers assigned to assist in the kitchen.
time immemorial         (Engl. law) time prior to the ascension of
                        Richard I (1189).