The relation between tightness and looseness between two mating parts is called fit. The looseness of the skin results in the Basset's characteristic facial wrinkles. His style included 'metrical vandalism' and looseness of structure. Biographer Spencer Leigh notes the "looseness of his phrasing in the second chorus". She surprised him by her extraordinary looseness, sometimes bordering arrogance. The purpose of the design was to induce more looseness into longboards. The second level of the pyramid is relaxation (looseness). The looseness of the definition of relevant evidence is generally construed to mean "liberal" production. There is thus some looseness in the definition. Other revolvers have a hint of looseness even at full-cock. Foster has been critical of the field of visual culture, accusing it of "looseness". Bat tails provide looseness for rail to rail transitions.