2. (modifier) tapering, coming to a point.
He anga koeko tō te papatai (PK 2008:273). / The turret shell has a shell that tapers to a point.
3. (noun) cone, pyramid.
Ka rite te āhua o tērā maunga ki te koeko. / The shape of that mountain is like a cone.
Ko te koeko tētahi āhua ahu-3, he taparau, he porowhita rānei te pūtake, ā, ka tūtaki ērā atu o ngā mata ki tētahi pūwāhi kotahi (TRP 2010:152). / A cone is a three-dimensional shape which has a polygon or circle as its base, and all the other faces meet at a point (TRP 2010:152).
4. (noun) spire, steeple.
He rīpeka kei te pito whakarunga o te koeko o tērā whare karakia e whakakeo nei ki runga ki te rangi. / There is a cross at the top of the spire of that church rising to a sharp peak up in the sky.