[刻舟求剑 / 刻舟求劍, kè zhōu qiú jiànㄎㄜˋ ㄓㄡ ㄑㄧㄡˊ ㄐㄧㄢˋ] lit. a notch on the side of a boat to locate a sword dropped overboard (成语 saw); fig. an action made pointless by changed circumstances#108584
[おる, oru] (v1, vi) (1) (uk) (See 在る・1) to be (of animate objects); to exist; (2) to stay; (v1, aux-v) (3) (the い is sometimes dropped) (after the -te form of a verb) verb indicating continuing action or state (i.e. to be ..ing, to have been ..ing); (P)#12653
[でていく(出て行く;出ていく);でてゆく(出て行く;出てゆく), deteiku ( dete iku ; dete iku ); deteyuku ( dete iku ; dete yuku )] (v5k-s) (い may be dropped, particularly in plain or rough language) to go out and away; to leave
[いしゆみ, ishiyumi] (n) (1) crossbow (inc. large models operated by a number of people); (2) netted apparatus atop a wall containing large stones, which were dropped onto attackers by cutting the net; (3) slingshot; catapult