prop

• vt. 支える；支える
• n. 支柱；サポーター

中オランダ語のproppe、つる支柱、支え、語源不明から。ラテン語のpropago（置く、固定する）が語源で、pro-（前方）、-pag（固定する）が語源かもしれない。

prop (v.)

"to support," mid-15c., probably from prop (n.1) or a related verb in Dutch. Related: Propped; propping.

prop (n.1)

"support," mid-15c., from Middle Dutch proppe "vine prop, support," of unknown origin. Probably related to Old High German pfropfo, German pfropfen "to prop," perhaps from Latin propago "a set, layer of a plant" (see propagation). Irish propa, Gaelic prop are from English.

prop (n.2)

"object used in a play," 1898, from props (1841), shortened form of properties (which was in theatrical use from early 15c.). Props as slang shortening for proper respects (or something similar) appeared c. 1999.

prop (n.3)

short for propeller, 1914.

1. The prop shaft vibrated like mad and shook the exhaust mounting loose.

支持棒が狂ったように振動し、排気管を緩める。

2.If you have difficulty sitting like this， prop up your back against a wall.

このまま座るのが難しいなら、壁に背を向けて座りましょう。

3.A worker put a prop against the wall of the tunnel to keep it from falling.

1人の労働者がトンネル壁を崩壊しないように物で支えている。

4.Punctuation，then，is a civic prop ，a pillar that holds society upright.

そう言えば、句読点は庶民の支えであり、社会を崩壊させないための支えである。

5.The government does not intend to prop up declining industries.

政府は不景気な企業を支援する気はない。