RATS, RBIS, ROAN, SNAP, SONG, TALC, TEEN, THRU, TOAD, TODO, TOFU, UPON . Three-letter: APB, EMT, ESL, ETS, FRO , MOP , and PIS. 1A. TOAD (Its eye may be part of a witch’s brew) upset me, as I‘ve always known the ingredient as an eye of NEWT -- Macbeth (IV,