also: かにばば
meconium
Medical term for a newborn's first feces; cross-referenced with 胎便 (たいべん), which is the standard modern term. 蟹屎 is a rare, possibly historical or literary synonym.
See also: 胎便
In old medical texts, meconium is sometimes written as 蟹屎.
Alternate reading, possibly dialectal or childish; the source does not specify usage.
The term literally means 'crab feces,' likely from the appearance of meconium. The exact origin is uncertain; it may be a traditional descriptive term.