1. (n.) A round mass of snow pressed or roller together, or anything resembling such a mass.

2. (n.) The Guelder-rose.

3. (v. t.) To pelt with snowballs; to throw snowballs at.

4. (v. i.) To throw snowballs.

accrue accumulate accumulation acervation advance agglomerate agglomeration aggregate aggregation amassment appreciate augment avalanche ball balloon bead blizzard bloat boom breed broaden build bulk chunk congeries conglobation conglobulate conglomerate conglomeration crescendo crystal cumulation develop dilate distend driven snow enlarge expand extend fill out flake flurry gain gain strength gathering get ahead globe glomeration go up gob granular snow greaten grow hunk igloo increase intensify lump mantle of snow mass mogul mount multiply mushroom proliferate puff up rise run up shoot up slosh slush snow snow banner snow bed snow blanket snow blast snow fence snow flurry snow roller snow slush snow squall snow wreath snow-crystal snowbank snowbridge snowcap snowdrift snowfall snowfield snowflake snowland snowman snowscape snowshed snowslide snowslip snowstorm sphere spherify spread stockpile strengthen stretch swell tumefy upsurge wad wax wet snow widen