Alternative spelling of アマゾン河海豚

the Amazon River

unique / peculiar, remarkable; having an uncommon character / exceptional; exceptionally good

uniqueness / peculiarity / exceptionality

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,

a dolphin or porpoise (the mammal)

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

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

(mathematics) singularity; singular point

a beluga whale