sprog Share definition Flag once disparaging term for a child, now often used affectionately. (Chiefly British) "I'll come by your place after I drop the sprogs at school" sprog by grhabyt April 19, 2006 Words you can keep railfan mug chonk mug chud mug based mug 67 mug slime mug mogging mug chopped mug thot mug glazing mug huzz mug yams mug larp mug unc mug cracked mug simp mug baddie mug bop mug lolcow mug