足慣らし
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Meanings
1
walking practice; getting one's legs into shape
Specifically refers to walking or light exercise to condition the legs, often before a long walk, hike, or athletic event.
You should do some walking practice before climbing the mountain.
A morning walk every day is good for getting your legs into shape.
2
Extended figurative use: a preliminary activity that prepares one for a larger task, like a warm-up before a performance or a trial run before the real event.
Before the main event, I gave a short speech as a warm-up.
This small project will serve as preparation for the big job.