brush up, reject, exclude, eliminate, bone plectrum
撥 centers on a hand action that flicks or pushes something away: brushing up, rejecting, excluding, or eliminating. The bone plectrum sense is a specialized tool that plucks or flicks strings, fitting the same core idea of a quick, decisive hand motion.
撥 combines 扌 (hand) with 發, which likely contributes both sound and the idea of sending out or releasing. The character originally referred to a hand action of flicking or plucking, later extending to rejecting or eliminating.
The hand radical 扌 beside 發 suggests a hand sending something away with a flick. Picture brushing dust off a surface or flicking a plectrum to reject unwanted notes.
For ハツ, imagine a hand flicking away a hot hat: the hat flies off with a 'hats!' sound, cueing ハツ while the hand rejects it.
plectrum (for a shamisen, biwa, etc.); pick
to get a rakeoff; to get a kickback; to take a kickback
to splash; to splatter
to hit (e.g. with a car); to knock down
to flatly refuse; to reject; to spurn
pushing away food one does not want to eat with one's chopsticks (a breach of etiquette)
rejected goods; sorted-out goods
water bucket suspended from a weighted rod
to send (something) flying; to splatter
plucked string instrument
water repellency
oil repellency
pick-guard (protective patch on a shamisen, etc.)
engraving of lacquer-stained ivory (popular during the Tang dynasty)
pick-guard (protective patch on a biwa, etc.)
sound made by a plectrum
syllabic nasal (in Japanese)
nasal sound change (generation of the mora 'n', primarily from verb stems ending in 'i')
Edo-period hairstyle for the common man (the entire head shaved just above the ear, with the remainder tied up in the back)
Javanese long pepper (Piper retrofractum)