icebreakerice‧break‧er /ˈaɪsˌbreɪkə $ -ər/ noun [countable] 
Examples
This game is an effective icebreaker at the beginning of a semester. → break the ice at break1(29)2a ship that cuts a passage through floating ice
ExamplesEXAMPLES FROM THE CORPUS
word sets- A baby is a powerful icebreaker, and Charlie is especially charming in this regard.
- Eddie has scored her first basket, an icebreaker that helps her self-confidence.
- Excellent fun and a good icebreaker for the kids.
WORD SETS► Water
1something that you say or do to make people less nervous when they first meet: adrift, adjectiveaft, adjectiveahoy, interjectionaircraft carrier, nounamidships, adverbanchor, nounanchor, verbanchorage, nounark, nounastern, adverbballast, nounbarge, nounbargee, nounbargepole, nounbarnacle, nounbarque, nounbarrage, nounbeach, verbbeam, nounbecalmed, adjectiveberth, nounberth, verbbilge, nounbill of lading, nounbillow, nounblade, nounboat, nounboat hook, nounboathouse, nounboating, nounboatman, nounbob, verbbollard, nounboom, nounbow, nounbridge, nounbrig, nounbulkhead, nounbunk, nounbuoy, nouncabin, nouncabin boy, nouncabin class, nouncabin cruiser, nouncable, nouncanal, nouncanal boat, nouncanoe, nouncanoe, verbcapstan, nouncaptain, nouncatamaran, nouncircumnavigate, verbclipper, nouncoast, verbcoaster, nouncoastguard, nouncockpit, nouncommodore, nouncompanionway, nounconning tower, nouncoracle, nouncordage, nouncox, nouncoxswain, nouncraft, nouncrew, verbcrossing, nouncrow's nest, nouncruise, verbcruise liner, nouncruiser, nouncruise ship, nouncutter, noundeck, noundecompression chamber, nounderrick, noundinghy, noundisembark, verbdisgorge, verbdisplacement, noundock, noundock, verbdocker, noundockside, noundockyard, noundory, noundownstream, adverbdraught, noundraw, verbdrawbridge, noundredge, verbdredger, noundrift, verbdrift, noundrifter, noundriftwood, noundrilling platform, noundrown, verbdry dock, noundugout, noundyke, nounembark, verbensign, nounferry, nounferry, verbferryboat, nounfigurehead, nounfirst mate, nounfirst officer, nounfleet, nounflotilla, nounfo'c'sle, nounforecastle, nounfounder, verbfrigate, nounfrogman, noungalleon, noungalley, noungangplank, noungangway, noungondola, noungondolier, noungrappling iron, nounground, verbgunnel, noungunwale, nounhalyard, nounharbour, nounhatch, nounhawser, nounhelm, nounhelmsman, nounhigh tide, nounhigh water, nounhigh water mark, nounhold, nounhoot, nounhoot, verbhouseboat, nounhovercraft, nounhulk, nounhull, nounhydrofoil, nounhydroplane, nounhydroplane, verbicebreaker, nouninboard, adjectiveinflatable, nouninflow, nounJet Ski, nounjetty, nounjib, nounjunk, nounkayak, nounkeel, nounketch, nounknot, nounkt, land, verblanding stage, nounlane, nounlaunch, verblaunch, nounleeward, adjectivelife belt, nounlifeboat, nounlife buoy, nounlife jacket, nounlifeline, nounlife preserver, nounlife raft, nounlife vest, nounlighter, nounlighthouse, nounlightship, nounliner, nounlist, verblock, nounlock keeper, nounlog book, nounlongshoreman, nounlow tide, nounlow water, nounlow water mark, nounlugger, nounmainmast, nounmainsail, nounmaritime, adjectivemast, nounmaster, nounmasthead, nounmerchantman, nounmerchant navy, nounmerchant seaman, nounminesweeper, nounmizzen, nounmoor, verbmooring, nounmother ship, nounmotorboat, nounnarrow boat, nounnautical, adjectivenavigable, adjectivenavigate, verbnavigation, nounoakum, nounoar, nounoarlock, nounoarsman, nounoarswoman, nounoceangoing, adjectiveoffshore, adjectiveoil slick, nounoil tanker, nounoutboard motor, nounoutrigger, nounoverboard, adverboyster bed, nounpacket boat, nounpaddle, nounpaddle, verbpaddle steamer, nounpassage, nounpelagic, adjectiveperiscope, nounpier, nounpilot, nounpilot, verbpitch, verbPlimsoll line, nounplot, verbply, verbpoop deck, nounport, nounporthole, nounport of call, nounpowerboat, nounprivateer, nounpromenade deck, nounpropeller, nounprow, nounpunt, nounpunt, verbpurser, nounquadrant, nounquarterdeck, nounquay, nounraft, nounrafting, nounreef, verbrefit, verbregatta, nounresurface, verbrig, verbrig, nounrigging, nounroll, verbroll, nounroll-on roll-off, adjectivero-ro, nounrow, verbrowboat, nounrowing, nounrowing boat, nounrowlock, nounrubber dinghy, nounrudder, nounsail, verbsail, nounsailboat, nounsailing, nounsailing boat, nounsailing ship, nounsailor, nounsaloon, nounsampan, nounschooner, nounscull, nounscull, verbscupper, verbscupper, nounscuttle, verbseaborne, adjectivesea captain, nounsea dog, nounseafaring, adjectiveseagoing, adjectivesea lane, nounsea legs, nounsealer, nounseaman, nounseamanship, nounseaworthy, adjectivesheet, nounship, nounshipmate, nounshipping, nounshipping lane, nounship's chandler, nounshipwreck, nounshipwright, nounshipyard, nounside-wheeler, nounskiff, nounskull and crossbones, nounslaver, nounslipway, nounsloop, nounsluice, nounsmack, nounsonar, nounspar, nounspeedboat, nounsplice, verbSS, starboard, nounsteam, verbsteamboat, nounsteamer, nounsteamship, nounsteerage, nounsteersman, nounstern, nounstevedore, nounsteward, nounstewardess, nounstoker, nounsub, nounsubmarine, nounsubmarine, adjectivesubmersible, nounsundeck, nounsupertanker, nounswab, verbswell, nounswing bridge, nountack, nountack, verbtender, nounthird class, nountiller, nountonnage, nountopside, adverbtowpath, nountransport, nountransport ship, nountrawler, nountrim, verbtrimaran, nountroopship, nountub, nountug, nounupstream, adverbvessel, nounvoyage, nounvoyage, verbwake, nounwardroom, nounwarship, nounwaterborne, adjectivewaterlogged, adjectivewaterway, nounweir, nounwhaler, nounwheelhouse, nounwhirlpool, nounwindjammer, nounwindward, adjectivewreck, nounyachting, noun
This game is an effective icebreaker at the beginning of a semester. → break the ice at break1(29)2a ship that cuts a passage through floating ice