"fork for lifting and pitching" (hay, etc.), commonly with a long handle and two prongs, mid-14c., altered (by influence of pichen "to throw, thrust;" see pitch (v.1)) from Middle English pic-forken (c. 1200), from pik (see pike (n.2)) + fork (n.). The verb, "to lift or throw with a pitchfork," is attested from 1837.
pitchfork hay
Pitcairn
pitch
pitch-and-toss
pitchblende
pitcher
pitchfork
pitching
pitchman
pitch-pipe
pitchy
piteous