/ ˈrɒstə(r); NAmE ˈrɑːs-/ noun , verb
■ noun
1.
a list of people's names and the jobs that they have to do at a particular time
SYN rota :
a duty roster
2.
a list of the names of people who are available to do a job, play in a team, etc.
■ verb
( BrE ) to put sb's name on a roster :
[ vn ]
The driver was rostered for Sunday.
[also vn to inf ]
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WORD ORIGIN
early 18th cent. (originally denoting a list of duties and leave for military personnel): from Dutch rooster list, earlier gridiron, from roosten to roast, with reference to its parallel lines.