djine -jin- gismu

x1 is a ring/annulus/torus/circle [shape/form] of material x2, inside diam. x3, outside diam. x4.

Also ellipse, oval (= jincla); (usage has been for near-circles, such as tight spirals, even if not closed loops). Also band, belt, encircle (= jinsru). See also clupa, cukla, dasri, karli, sovda, sruri, konju.


In notes:

clupa
x1 is a loop/circuit of x2 [material].
cukla
x1 is round/circular [2-dimensional shape/form]; x1 is a disk/circle/ring.
dasri
x1 is a ribbon/tape/strip/band/stripe of material x2.
karli
x1 is a collar/ring/belt/band around/surrounding x2 made of material x3.
konju
x1 is a cone [shape/form] of material x2 with vertex x3.
sovda
x1 is an egg/ovum/sperm/pollen/gamete of/from organism [mother/father] x2.
sruri
x1 encircles/encloses/is surrounding x2 in direction(s)/dimension(s)/plane x3.
degja'i
j1 is a ring on finger j2=d1.