1.
straight line
A perfectly straight path without curves or bends.
道が一直線に続いている。
The road continues in a straight line.
2.
beeline; directly; single-mindedly
Moving or heading directly toward a goal without detours.
彼は目標に向かって一直線に進んだ。
He headed straight for his goal.
仕事が終わったら一直線に家に帰る。
When work is over, I head straight home.
STRUCTURE:
一 (one/single) + 直線 (straight line)
USAGE PATTERNS:
- 一直線に続く (to continue in a straight line)
- 一直線に進む (to proceed directly)
- 一直線に向かう (to head straight toward)
FIGURATIVE USE:
Often used metaphorically to describe pursuing a goal without distraction or deviation.
SIMILAR:
- まっすぐ - straight, directly
- 直行 - going directly