flying high; ambition
Depicts a bird (隹) with a line on its neck to either indicate a crane's long neck or loudness of its call. Based on the original meaning "crane", now written as 鶴. The meaning later shifted to "very high".
《說文》：“隺，高至也。从隹上欲出冂。《易》曰：‘夫乾隺然’。”
crane