Within the computer-assisted language learning (CALL) field, multimodal research endeavours to consider the simultaneous presence and interaction between verbal communication modes (audio, text chat) present in foreign language learning situations with co-verbal and non-verbal modes (gestures, gaze, posture, other kinesic aspects). This paper explores how trainee-teachers of French as a foreign language, during webconferencing-supported teaching, orchestrate different semiotic resources that are available to them for lexical explanations.