Relating to only part of a whole

ETYM French part, Latin pars, gen. partis; cf. parere to bring forth, produce. Related to Parent, Depart, Parcel, Partner, Party, Portion.
1. A portion of a natural object; SYN. piece.
2. Something less than the whole of a human artifact; SYN. portion.
3. Something determined in relation to something that includes it; SYN. portion, component part, component.
4. One of the portions into which something is regarded as divided and which together constitute a whole; SYN. section, division.
5. The melody carried by a particular voice or instrument in polyphonic music; SYN. voice.
6. So far as concerns the actor specified; or.
7. A line where the hair is parted.
Written music designated for an individual musician or group of musicians, for example the “soprano part”, in contrast to a score, which provides all the parts on each page. A part, or voice, can also be an independent line of a contrapuntal work, for example a fugue in four parts.
A large-scale section of a composition is also called a part, for example Part I of Elgar’s Dream of Gerontius 1900.

1. To be broken or divided into parts or pieces; to break; to become separated
2. To give up or give away; to relinquish a connection of any kind; -- followed by with or from
3. To go away; to depart; to take leave; to quit each other.