克
コク, か.つ, かつ, まさる, よし
overcome, kindly, skillfully
JLPT1 G7 S7 F1333
The relevant oracle bone form of this character shows a helmeted head# + 儿 person → helmeted warrior, stretched to full height (compare 亟). *Overcome* and *conquer* are borrowed meanings.
[Full Kanji Etymology List]