ETYM Old Eng. pich, as. pic, Latin pix.
1. Any of various dark heavy viscid substances obtained as a residue; SYN. tar.
2. The action or manner of throwing something.
3. The throwing of a baseball by a pitcher to a batter; SYN. delivery.
4. The property of sound that varies with variation in the frequency of vibration.
5. Degree of deviation from a horizontal plane; SYN. rake, slant.
6. A high approach shot in golf; SYN. pitch shot.
7. (British) A vendor's position (especially on the sidewalk).
8. An all-fours card game in which the first card led is a trump; SYN. auction pitch.
In music, the position of a note in the scale, dependent on the frequency of the predominant sound wave. In concert pitch, A above middle C (A4) is the reference tone to which instruments are tuned. Perfect pitch is an ability to name or reproduce any note heard or asked for; it does not necessarily imply high musical ability.
In a musical instrument, pitch is a consequence of design converting a continuous input of energy into a periodic output of pressure waves that the ear perceives as a tone of constant pitch. In string instruments, pitch depends on the length, composition, and tension of the string in vibration, transmitted to a resonating soundbox. Tuned percussion instruments generate pitch by a combination of natural reverberation of the vibrating body, and the natural frequency of any associated resonator, such as the shell of a drum or the soundboard of a piano. The fundamental pitch of a wind instrument (excepting free reeds) depends on the period of oscillation of the traveling pressure wave within the tube, and is a function of the length of the tube. In organ terminology, pipes are classified in wavelength pitch as 4-foot, 8-foot, 16-foot, depending on their octave range.
In mechanics, the distance between the adjacent threads of a screw or bolt. When a screw is turned through one full turn it moves up or down a distance equal to the pitch of its thread. A screw thread is a simple type of machine, acting like a rolled-up inclined plane, or ramp (as may be illustrated by rolling a long paper triangle around a pencil). A screw has a mechanical advantage greater than one.
In chemistry, a black, sticky substance, hard when cold, but liquid when hot, used for waterproofing, roofing, and paving. It is made by the destructive distillation of wood or coal tar, and has been used since antiquity for caulking wooden ships.
ETYM Old Eng. picchen; akin to Eng. pick, pike.
1. To erect and fix firmly in place, especially at an angle.
2. To erect and fasten; SYN. set up.
3. To throw, especially in certain sports (e.g. baseball).
4. To set to a certain pitch, as of an instrument or one's voice.
5. To cause to be at a particular level.
6. (Nautical) To have the bow rise and fall sharply because of rough seas.