noun
quick-wittedness; tact; sensibility
Almost always used in the phrase 目端が利く (めはしがきく), meaning to be sharp, tactful, or quick on the uptake. Rarely used independently.
See also: 目端が利く
彼は目端が利くから、どんな状況でもうまく立ち回れる。
He is quick-witted, so he can handle any situation well.
目端の利く人は、細かい変化にもすぐ気づく。
A perceptive person quickly notices even small changes.
Compound of 目 (eye) and 端 (edge, tip), suggesting sharpness of perception. The exact historical derivation is uncertain.