PITCH n.
ine, or circle, on which the pitch of teeth is measured. -- Pitch of a roof (Arch.), the inclination or slope of the sides expressed by the height in parts of the span; as, one half pitch; whole pitch; or by the height in parts of the half span, especially among engineers; or by degrees, as a pitch of 30°, of 45°, etc…
PREPOSSESS v.
or heart, so as to preclude other things; hence, to bias or prejudice; to give a previous inclination to, for or against anything; esp., to induce a favorable opinion beforehand, or at the outset. It created him enemies, and prepossessed the lord general. Evelyn.