1. condition:"the aircraft remains in fine fettle"
verb
1. trim or clean the rough edges of (a metal casting or a piece of pottery) before firing.
▪ make or repair (something):"the familiar sounds of bikes being prepped and fettled"
Word Originlate Middle English (as a verb in the general sense ‘get ready, prepare’, specifically ‘prepare oneself for battle, gird up’): from dialect fettle ‘strip of material, girdle’, from Old English fetel, of Germanic origin; related to German Fessel ‘chain, band’.