ケイ

ちぎ.る

契, 龶, 刀, 大

大

pledge, promise, vow

契約(けいやく): contract; compact; agreement
契機(けいき): opportunity; chance
契る(ちぎる): (1) to pledge; to promise; to swear (2) to have sexual intercourse (esp. between husband and wife); to share a bed