Lot means any portion, piece, division, unit, or undivided interest in land located in any state or foreign country, if the interest includes the right to the exclusive use of a specific portion of the land.
12 CFR § 1010.1
Statutory terms. All terms are used in accordance with their statutory meaning in 15 U.S.C. 1701, unless otherwise defined in paragraph (b) of this section or elsewhere in this part.