| Answer | Crossword Clue |
|---|---|
| ACER | One scoring on a serve |
| ACING | Scoring on serve |
| railed | one of a pair of parallel bars laid on a prepared track, roadway, etc, that serve as a guide and running surface for the wheels of a railway train, tramcar, etc |
| NERD | One scoring 100% on Sporcle quizzes, say |
| villus | one of the minute, wormlike processes on certain membranes, esp. on the mucous membrane of the small intestine, where they serve in absorbing nutriment |
| villi | one of the minute, wormlike processes on certain membranes, esp. on the mucous membrane of the small intestine, where they serve in absorbing nutriment |
