the world > movement > progressive motion > walking > walk, tread, or step [verb (intransitive)] > miss one's footing > slip > of the foot (6)
Of the foot: = slide, v. 8b.
intransitive. To slide, slip, glide.
Of the foot: To slip. Also figurative.
intransitive to slip away.
Of a person's feet: To slip suddenly. Now only with phrase or adverb.
intransitive. Of the foot: to slip on (also across, upon) a rounded or cylindrical object.