Several theorists have proposed that children may interpret an ambiguous word by attending to the dimension that is most relevant in the immediate discourse context. The current study offers a direct test of this hypothesis. Children aged 2;6 and 3;4 (N = 24 in each group) were presented with a novel object with an unusual shape and texture and were told ‘This is a dacky one’. In the Shape-Relevant condition, two other objects' shapes were described before the target object was labelled (‘This is a round one; this is a square one’). In the Texture-Relevant condition, two preceding objects' textures were described (‘This is a smooth one; this is a fuzzy one’). Subsequent comprehension tests indicated that, in extending the novel adjective to other exemplars, children attended to the dimension that was most relevant to the preceding discourse context.