Pent
来自Big Physics
late 16th century: pent, obsolete past participle of pen2 (verb).
wiktionary
From pen + -t.
Clipping of pentatonic.
Clipping of pentacle or pentagram.
etymonline
pent (adj.)
"kept in, confined," 1540s, variant of penned, past participle of pen (v.2). Pent-up (also pent up) is from 1580s.
