counter for packages, luggage, etc.
Used to count individual items of luggage, parcels, or similar discrete objects, especially in shipping or delivery contexts.
I sent three packages by courier.
counter for electrical outlets (of a power strip)
Specifically used for counting the number of outlets on a power strip or similar multi-socket device.
I bought a power strip with six outlets.
Standard kanji spelling for this counter.
Rarely used kanji form; 個口 is preferred.
Compound of 個 (counter for individual items) and 口 (mouth, opening), literally 'individual opening'. The exact historical derivation is uncertain; the spelling is conventionally associated with counting discrete units or outlets.