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general::
Phrase(s): step something off
to measure a distance by counting the paces required to cover it. • She stepped the distance off and noted it on her pad. • Liz stepped off the number of feet from the window to the opposite wall., Phrase(s): step off (of) something
to leave something elevated with one’s first step. (Of is usually retained before pronouns.) • She stepped off the bottom step and walked down the street. • Tony stepped off of the bank and waded across the stream., Phrase(s): step off
to come off something by taking a step. • She came to the bottom step and stepped off. • Ed was afraid to dive in from the side of the pool, so he just stepped off.
McGrawhill's American Idioms And Phrasal Verbs