"contrivance for catching unawares," late Old English træppe, treppe "snare, trap," from Proto-Germanic *trep- (source also of Middle Dutch trappe "trap, snare"), related to Germanic words for "stair, step, tread" (Middle Dutch, Middle Low German trappe, treppe, German Treppe "step, stair," English tread (v.)).
This is probably literally "that on or into which one steps," from PIE *dreb-, an extended form of a root *der- (1), base of words meaning "to run, walk, step." The English word is probably akin to Old French trape, Spanish trampa "trap, pit, snare," but the exact relationship is uncertain.
The sense of "deceitful practice, device or contrivance to betray one" is recorded from c. 1400. The meaning "U-shaped section of a drain pipe" is from 1833. Slang meaning "mouth" is from 1776. Speed trap is by 1908. Trap-door "door in a floor or ceiling" (often hidden and leading to a passageway or secret place) is attested from late 14c. (trappe-dore).
late 12c., poverte, "destitution, want, need or insufficiency of money or goods," from Old French poverte, povrete "poverty, misery, wretched condition" (Modern French pauvreté), from Latin paupertatem (nominative paupertas) "poverty," from pauper "poor" (see poor (adj.)).
From early 13c. in reference to deliberate poverty as a Christian act. Figuratively from mid-14c., "dearth, scantiness;" of the spirit, "humility," from the Beatitudes.
Seeing so much poverty everywhere makes me think that God is not rich. He gives the appearance of it, but I suspect some financial difficulties. [Victor Hugo, "Les Misérables," 1862]
Poverty line "estimated minimum income for maintaining the necessities of life" is attested from 1891; poverty trap "situation in which any gain in income is offset by a loss of state benefits" is from 1966; poverty-stricken "reduced to a state of poverty" is by 1778.
Poverty is a strong word, stronger than being poor; want is still stronger, indicating that one has not even the necessaries of life ; indigence is often stronger than want, implying especially, also, the lack of those things to which one has been used and that befit one's station ; penury is poverty that is severe to abjectness ; destitution is the state of having absolutely nothing .... [Century Dictionary]
late 14c., "ensnare (an animal), catch in a trap; encircle; capture," from trap (n.) or from Old English betræppan. Figurative use is slightly earlier (late 14c.). Related: Trapped; trapping.