Kalmar "kullun gashin tsuntsu" yawanci tana nufin babban gashin tsuntsu mai kauri daga reshe ko wutsiya na tsuntsu, wanda aka saba amfani da shi wajen rubutu da alkalami. Za a iya kaifi gashin tsuntsun a siffata shi zuwa wuri, sannan a tsoma shi cikin tawada don rubuta haruffa ko wasu takardu. Kalmar “quill” kuma tana iya nufin ɓangaren fuka-fuki mai kama da ramuka, wanda ke riƙe barbus da barbules tare.