def english_def_formatter(senses):
    """Formats the english definitions into a list separated by commas

    Args:
        senses (array with dict elements): an array of english definitions for a given vocabulary word
    Returns:
        formatted_definitions (string): a string containing formatted english definitions
    """
    # iterate through each item in senses, and grab the english definitions
    eng_def_list = []
    for sense in senses:
        if 'english_definitions' in sense:
            # iterate through each english definition in a english_definitions, and add it to a list
            for i in range(0, len(sense['english_definitions'])):
                eng_def_list.append(sense['english_definitions'][i])
    return ', '.join(eng_def_list)