A prop or strut used to support or brace something (e.g., a tension rod).
地震対策に本棚に突っ張り棒を取り付けた。
I installed a tension rod on the bookshelf as an earthquake precaution.
工事現場では仮設の突っ張りで壁を支えている。
At the construction site they are supporting the wall with temporary braces.
Tightness or stiffness — a feeling of muscles or tissue becoming taut (cramp-like or stiff sensation).
長時間同じ姿勢でいて、肩に突っ張りを感じた。
After sitting in the same position for a long time, I felt stiffness in my shoulders.
ストレッチをすると、足の突っ張りが和らいだ。
Doing stretches eased the tightness in my legs.
A thrusting or slapping attack in sumo — offensive moves like thrusts to the opponent.
力士は序盤に突っ張りで相手を後退させた。
In the early stages, the rikishi forced his opponent back with thrusts.
Juvenile delinquent / punk — colloquial term (ツッパリ) for rebellious youths (esp. historically).
あの地域では昔、ツッパリが多くて近所が怖かった。
Back in the day there were many delinquents in that area and the neighborhood felt scary.
彼は不良だったが、今は更生して真面目に働いていると言う。
He used to be a delinquent, but now he has reformed and works earnestly.