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to prick; to stab
to poke; to prod; to push; to thrust; to nudge; to hit; to strike
to use (a cane); to prop oneself up with; to press against (the floor, etc.)
to attack
to brave (the rain, etc.)
「突く」 has another reading with different meanings.
彼は棒で雪の中を突いて何かを探していた。
He was poking through the snow with a stick, searching for something.
記者は彼の急所を突く質問を次々とした。
He asked a question that hit the vital point.
おじいさんは棒で地面を突いて歩いている。
He walks poking the ground with a stick.