1. Living being - That which is possessed of life; it is Jīva, because it lives, it experiences jīvatva (the state of being a Jīva) and undergoes the effect of Āyuṣya (life-span-determining) Karma,
jamhā jīve jīvati, jīvattaṃ āuyaṃ ca kammaṃ uvajīvati tamhājīve tti vattavvaṃṃ siyā.
(Bhaga 2.15)
2. That living being, which is possessed of five sense-organs.
....jīvāḥ pancendriyā jneyāḥ....
(UśāVṛ Pa 584)
3. Ātmā (soul)A real existence which is an indivisible continuum of innumerable undetachable Pradeśas (the indivisible units of the substance) of sentience (consciousness), and which is one of the nine Tattvas (categories of truth), and whose distinguishing characteristics is Upayoga (activity of sentience or consciousness).
asamkhejjā......logāgāsappadesaullapadese tu jive ti vattavvam.
(AvaCū 1 p.420)
uvayogalakkhane nam jīve..
(Bhaga 13.59)
(U 28.11)
jīve tāva niyamā jīve, jīve vi niyamājīve.. jīvacaitanyayohparasparenāvinābhūtatvājjīva- ścaitanyamevacaitanyamapi jīva eva.
(Bhaga 6.174 Vṛ)
See - Upayoga.
4. A Deśa (part) of the Jīvāstikāya (one of the hveAstikāyas (extended substances), possessed of consciousness).
upayogaguno jīvāstikāyah......tadamśabhūto jīvah. '
(Bhaga 2.135 Vṛ)