Inflections of ballpoint pen [n.]
| sing. | ballpoint pen | 
| plur. | ballpoint pens | 
Words with the same pattern :
compulsory education quinoxalin troll pawn glaive jet pump inthronization Glisson's rule computer centre election judge military buildup first-timer nut cutlet figurehead summit camp aleuriospore assailer tentative contract transparence neep ... (105059 mots)