The term 'send out' can be defined in many ways, and the crossword solutions provided are all related to this definition. The first solution is 'SHIP', which means to transport goods or people by water or air. The second solution is 'EMIT', which means to send out energy, light, or heat. The third solution is 'RADIATE', which means to send out energy or heat in the form of waves or particles. The fourth solution is 'ISSUE', which means to send out a publication or to make something available. The fifth solution is 'EXPORT', which means to send goods or services to another country for sale or trade.