Here's what rhymes with slgno.
no know o au oh owe aux mo eau ow eux mow noe oe so go though low show co grow snow row tho fo foe glow ho lo quo bo doe dough po ro toe wo woe crow tow yo beau ceux faut goe hoe jo ko sew soe uno vo beaux cho dau roe sho yeux zo rho whoa doh kayo schmo schmoe ago flow blow slow throw pro fro thro bio nouveau aglow cameo floe siglo tuo bro dunno stow throe trow kapok sloe foreknow regrow gateau gateaux romeo resew although below ratio radio plateau audio chateau folio hello forego forgo propos aliquot dicho escrow outgrow rodeo topos chateaux oregano plateaux trousseau chapeau oleo tarot turbot overgrow bandeau matzoh chapeaux fatso pekoe trousseaux borzoi embryo overthrow studio undergo bestow overflow indigo patio stereo calico dynamo polio tableau vertigo apropos domino medico spatio tableaux afterglow piccolo undertow deathblow tallyho buffalo portico bungalow mistletoe adagio pompano microdot politico presidio pistachio mustachio moustachio portfolio archipelago braggadocio pianissimo impresario generalissimo