noun
ganglion cyst from carrying a mikoshi
Colloquial term for a ganglion cyst that develops on the shoulder from the pressure of carrying a portable shrine (mikoshi). The name likens the lump to an octopus (タコ).
See also: 神輿
祭りの後、肩に神輿ダコができてしまった。
After the festival, I got a ganglion cyst on my shoulder from carrying the mikoshi.
Medical term for ganglion cyst; 神輿ダコ is a colloquial, specific cause-based name.
General word for callus or corn; 神輿ダコ specifies the cause (mikoshi carrying) and refers to a ganglion cyst, not a simple callus.
Compound of 神輿 (mikoshi, 'portable shrine') and タコ (tako, 'octopus' or colloquially 'callus/lump'), from the resemblance of the cyst to an octopus or a callus caused by carrying the heavy shrine.