This is the 805th most frequent Swedish word.
kilo
Kilogram.
Here, 'kilo' is used as a noun meaning 'kilogram', representing a unit of mass.
Jag köpte ett kilo äpplen på marknaden.
I bought a kilogram of apples at the market.
This usage of 'kilo' specifies weight, used as part of the phrase 'a few kilograms' to quantify the lightness of the object.
Cykeln väger bara några kilo och är lätt att bära.
The bicycle only weighs a few kilograms and is easy to carry.
In this sentence, 'kilo' is functioning as a midaof the quantity 'several kilograms'. This indicates weight.