fasten

• vt.固定する；集中する；留める；課す
• vi.締め付ける；捕らえる；集中させる
• n.（締める）人の名前；（英）ファッソン

fast、fixedから。

fasten

fasten: [OE] Etymologically, fasten means ‘make fast’; it goes back ultimately to Germanic *fastuz, source of English fast. From this was derived a verb *fastinōjan, which passed into Old English as f?stnian. To begin with this seems only to have been used in the metaphorical sense ‘settle, establish’. The more concrete ‘attach’ is not recorded until the 12th century, and the earliest reference to its use for locking or bolting a door comes from as late as the mid-18th century.
=> fast

fasten (v.)

Old English f?stnian "make fast, make firm, fix, secure," also "ratify, betroth, confirm," from Proto-Germanic *fastinon "to make firm or fast" (cognates: Old Frisian festnia "to make firm, bind fast," Old Saxon fastnon, Old High German fastnion, German festnen, Old Norse fastna "to pledge, betroth"), from PIE *fast "solid, firm" (see fast (adj.)). Related: Fastened; fastening.

1. Builders must fasten down roofs of newly-built homes more securely.

建設労働者は新築家屋の屋根をより強固に固定しなければならない。

2.They fasten with a drawstring.

これらはロープで締められている。

3. Fasten your seatbelts，please.

シートベルトを締めてください。

4. Fasten your seat belts.

シートベルトを締めてください。

5.When you sew up to this end， fasten off the thread.

この頭を縫うとき、糸を結び付ける。