calipers — Usually, calipers. an instrument for measuring thicknesses and internal or external diameters inaccessible to a scale, consisting usually of a pair of adjustable pivoted legs.
falconry — the sport of hunting with falcons, hawks, eagles, etc.; hawking.
handlebars — Usually, handlebars. the curved steering bar of a bicycle, motorcycle, etc., placed in front of the rider and gripped by the hands. handlebar moustache.
Four-or-more syllable rhymes
parameters — Mathematics. a constant or variable term in a function that determines the specific form of the function but not its general nature, as a in f (x) = ax, where a determines only the slope of the line described by f (x). one of the independent variables in a set of parametric equations.