jipno -jip-ji'o- gismu

x1 is a tip/point/vertex/extremity/end [0-dimension shape/form] on object x2 at locus x3.

See also mokca, jesni, fanmo, kojna, krasi.

In notes:

fanmo
x1 is an end/finish/termination of thing/process x2; [not necessarily implying completeness].
jesni
x1 is a needle [pointed shape/form, not tool] of material x2.
kojna
x1 is a corner/point/at-least-3-dimensional [solid] angle [shape/form] in/on x2, of material x3.
krasi
x1 (site/event) is a source/start/beginning/origin of x2 (object/event/process).
mokca
x1 is a point/instant/moment [0-dimensional shape/form] in/on/at time/place x2.
dicyji'o
x1=j1 is an electrode of circuit/electric machinery/electronic component x2=j2 at locus x3=j3
galji'o
g1=j1 is the peak/summit of j2 at location j3 in frame of reference g2
jedjipli'i
l1 is a meridian on celestial body/sphere j2 (default Earth)
xandegji'o
x1 is a fingertip of finger x2 of hand x3 of body x4
boljipe
x1 is a ballpoint pen/biro for applying ink x2
jbofuvi
x1 is a Lojban-derived zi'evla/"self-loan-word" with meaning x2 derived from word(s) x3
kenjisefa
x1 is a black hole/singularity with radius of event horizon x2