|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.|
|—adj (often postpositive |
|1.||formal morally binding or necessary; obligatory: it is incumbent on me to attend|
|2.||resting or lying (on)|
|3.||a person who holds an office, esp a clergyman holding a benefice|
|[C16: from Latin incumbere to lie upon, devote one's attention to, from |
One who holds a public office. By virtue of their experience in office, their exposure to the public, and their ability to raise campaign funds, incumbents usually have a significant advantage over opponents if they choose to run for reelection.