Meaning of けんこ in Japanese

「来年こそは一部上場だ」と、社長は意気軒高だ。
You could see the elation in the president's face when he announced that our shares are going to be listed on the First Section of the TSE next year.

彼女はガードレールの強度について、ぜひ意見交換をしたいと望んでいます。
She would value the opportunity to exchange views on the strength of guard-rails.

乾坤一擲の大勝負。情けないけどこれが見事空振りに終わったんだなあ。
It was all-or-nothing and we struck out spectacularly.

煙草をすうことは健康に悪い。
Smoking is bad for the health.

２歳の娘の健康診断をお願いします。
I'd like to get a medical examination for my two-year-old daughter.

医者や病院は、再び健康体になれる人々の手助けをすべきです。
Doctors and hospitals should help the people who can get healthy again.