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origin; source; beginning
basis; base; foundation; root
cause
(raw) material; ingredient; base; mix (e.g. for a cake); (soup) stock
(one's) side
capital; principal; cost price
root (of a plant); (tree) trunk
part (of a brush, chopsticks, etc.) one holds (with the hand)
counter for plants or trees
first three lines of a waka
counter for falcons (in falconry)
「基」 has other readings with different meanings.
この理論を基に研究を進めたよ。
I advanced research based on this theory.
基を固めてから次に進もうね。
Let's solidify the foundation before moving on.
彼の経験を基にアドバイスをくれた。
He gave advice based on his experience.