rafter

n. 椽,椽架屋顶,筏夫

radioactive, radioactivity, radiogram, radiograph, radiographer, radiography, radioisotope, radiologist, radiology, radish, radium, radius, radon, RAF, raffia, raffish, raffishly, raffishness, raffle, raft, raftered, rag, rag-and-bone man, rag-bag, ragamuffin, rage, ragged, raggedly, raggedness, raging, raglan, ragout, rags, ragtag, ragtime, ragweed, ragwort, raid, raider, rail,