1
- a form of transport that travels regularly between two places（定时往返的）班车：
the nine o'clock shuttle from Edinburgh
九点从爱丁堡出发的班车
as modifier a shuttle bus service from the city centre.从市中心发出的往返班车服务。
1.1
- short for SPACE SHUTTLE.SPACE SHUTTLE的简称。
2
- a bobbin with two pointed ends used for carrying the weft thread across between the warp threads in weaving（织机的）梭, 梭子。
2.1
- a bobbin carrying the lower thread in a sewing machine（缝纫机的）摆梭。
3
- short for SHUTTLECOCK.SHUTTLECOCK的简称。
no obj., with adverbial of direction
1- travel regularly between two or more places穿梭, 往返：
the Secretary of State shuttled to and fro seeking compromise.
国务卿来回穿梭, 寻求和解。
1.1
- with obj. and adverbial of direction transport in a shuttle穿梭运送：
the river taxi shuttled employees between the newspaper's offices and the capital.
水上的士在报社与首都之间往返运送职员。
词源
Old English scytel 'dart， missile'， of Germanic origin; compare with Old Norse skutill 'harpoon'; related to SHOOT. Sense 1 and the verb are from the movement of the bobbin from one side of the loom to the other and back.