From ptosso (to crouch); akin to ptoeo and the alternate of pipto); a beggar (as cringing), i.e. Pauper (strictly denoting absolute or public mendicancy, although also used in a qualified or relative sense; whereas penes properly means only straitened circumstances in private), literally (often as noun) or figuratively (distressed) -- beggar(-ly), poor.
see GREEK ptoeo
see GREEK pipto
see GREEK penes
1. in classical Greek from Homer down, reduced to beggary, begging, mendicant, asking alms: Luke 14:13, 21; Luke 16:20, 22.
2. poor, needy (opposed to πλούσιος): Matthew 19:21; Matthew 26:9, 11; Mark 10:21; Mark 12:42, 43; Mark 14:5, 7; Luke 18:22; Luke 19:8; Luke 21:3; John 12:5, 6, 8; John 13:29; Romans 15:26; 2 Corinthians 6:10; Galatians 2:10; James 2:2, 3, 6; Revelation 13:16; in a broader sense, destitute of wealth, influence, position, honors; lowly, afflicted: Matthew 11:5; Luke 4:18 (from Isaiah 61:1); 3. universally, lacking in anything, with a dative of the respect: τῷ πνεύματι, as respects their spirit, i. e. destitute of the wealth of learning and intellectual culture which the schools afford (men of this class most readily gave themselves up to Christ's teaching and proved themselves fitted to lay hold of the heavenly treasure, Matthew 11:25; John 9:39; 1 Corinthians 1:26, 27; (others make the idea more inward and ethical: 'conscious of their spiritual need')), Matthew 5:3; compare with this the Epistle of Barnabas 19 [ET], see ἔσῃ ἁπλοῦς τῇ καρδία καί πλούσιος τῷ πνεύματι, abounding in Christian graces and the riches of the divine kingdom. (The Sept. for עָנִי, דַּל, רָשׁ, אֶבְיון, etc.)