A multifunctional nozzle (100; 200; 300) for a spinning machine, comprising a pressurisable nozzle housing with a nozzle channel, which extends along the longitudinal axis direction of the nozzle housing and is open on one side along the longitudinal axis direction, a fluid inlet for admitting a pressurised fluid into the nozzle channel to bring about a vortex flow within the nozzle channel, a nozzle body designed to be arranged in the nozzle channel or in the nozzle channel together with the nozzle housing, wherein the nozzle body is shorter than the nozzle channel along the longitudinal axis direction and has a through-duct, which extends along the longitudinal axis direction, for guiding through a thread or a fibre band, an annular gap, which extends in the nozzle channel along the longitudinal axis direction and has at least one narrow point, towards which the annular gap tapers on both sides along the longitudinal axis direction, wherein the narrow point is formed downstream of the fluid inlet along the longitudinal axis direction, a delimiting part designed to be formed or arranged in the nozzle channel, in a manner closing the nozzle housing, on a side of the fluid inlet that faces away from the narrow point, wherein the delimiting part has a further through-duct, extending along the longitudinal axis direction, for the thread or fibre band for communicating with the through-duct of the nozzle body, and a hollow-body-like flow conducting body designed to guide the thread or fibre band, in a manner accompanied by fluid, between the annular gap and the open end of the nozzle channel, wherein the annular gap is formed between the nozzle body and the nozzle housing and/or the flow conducting body. a pressurisable nozzle housing with a nozzle channel, which extends along the longitudinal axis direction of the nozzle housing and is open on one side along the longitudinal axis direction, a fluid inlet for admitting a pressurised fluid into the nozzle channel to bring about a vortex flow within the nozzle channel, a nozzle body designed to be arranged in the nozzle channel or in the nozzle channel together with the nozzle housing, wherein the nozzle body is shorter than the nozzle channel along the longitudinal axis direction and has a through-duct, which extends along the longitudinal axis direction, for guiding through a thread or a fibre band, an annular gap, which extends in the nozzle channel along the longitudinal axis direction and has at least one narrow point, towards which the annular gap tapers on both sides along the longitudinal axis direction, wherein the narrow point is formed downstream of the fluid inlet along the longitudinal axis direction, a delimiting part designed to be formed or arranged in the nozzle channel, in a manner closing the nozzle housing, on a side of the fluid inlet that faces away from the narrow point, wherein the delimiting part has a further through-duct, extending along the longitudinal axis direction, for the thread or fibre band for communicating with the through-duct of the nozzle body, and a hollow-body-like flow conducting body designed to guide the thread or fibre band, in a manner accompanied by fluid, between the annular gap and the open end of the nozzle channel, wherein the annular gap is formed between the nozzle body and the nozzle housing and/or the flow conducting body.