An Etymological Dictionary of Astronomy and Astrophysics

1. Notably sharp, clear-cut, and clear.
   

2. Noticeably neat (Merriam-Webster.com).

Etymology (EN): M.E, from O.E., from L. crispus “curled,” cognate with Walsh crych “curly.”

Etymology (PE): Tuj (Kurmanji Kurd.) variant of tiz, → sharp.