1. (noun) (sports) an official who keeps track of the time elapsed

• timer

2. (noun) a measuring instrument or device for keeping time

• horologe
• timepiece

1. (noun) (sports) an official who keeps track of the time elapsed

• athletics
• sport

1. (noun) a measuring instrument or device for keeping time

• atomic clock
• clock
• sandglass
• sundial
• ticker
• watch
• timer

1. (noun) (sports) an official who keeps track of the time elapsed

• official

2. (noun) a clerk who keeps track of the hours worked by employees

• clerk

3. (noun) a measuring instrument or device for keeping time

• measuring device
• measuring instrument
• measuring system

1. (noun) (sports) an official who keeps track of the time elapsed

• clock
• time