a nine-banded armadillo

outward appearance, façade

characteristic

an armadillo

obi - the sash worn with a kimono / paper wrapper (on books, CD, etc.)

to know, be aware of / to learn, acquire, / to be acquainted with, to know (someone) / (colloquial, in the negative) to care in the least about, to be concerned with,

the ninth day of the month / nine days

stem or continuative form of 知る (shiru) [godan]

Alternative spelling of 物知り: a person with broad knowledge, a knowledgeable person

multiplication table