pitch
n.— «It’s not enough that the average space between economy class seats (or “pitch,” as it’s known in industry parlance) has lost three inches since 1978. Trying to offer relief was Boeing, introducing its 787 Dreamliner with recommended eight-abreast seating.» —“Airbus Industries Standing-Room Concept” Gizmodo May 1, 2006. (source: Double-Tongued Dictionary)