That'd be an adjective, so you would lose (or go again). Only nouns are permitted in shiritori, unless ending in ん/-n, as you'd lose.小さい / ちいさい / chiisai - small
rousoku - candle ?maguro - tuna
? 月 - つき - tsuki - moon ?けいさつ - police ???
?
きつね - fox ?口 / くち / kuchi - mouth